Lack of power supply to the port. About the lack of power supply for the USB hub. Outdated drivers and BIOS

The connectors on the computer system unit are often sorely lacking, so many users purchase additional devices- hubs. But not everyone understands electronics, and often there is a lack of power supply to the USB hub port. Anyone who encounters such a message on the monitor screen has to figure out what to do in this situation.

What is a USB hub

Initially, the USB (USB) standard was designed to connect third-party telecommunications devices to computers. Who would have thought that today almost every conceivable technology is connected to this port:

Low-power speakers;
Keyboards;
Mice;
Modems;
Portable flash drives;
Charging cables for smartphones, etc.

Thus, there is a dissonance between the need to connect several devices to the machine and the limited number of ports. For example, a MacBook computer latest model has only one socket of this type: as a result, it will be impossible to charge the device and use a flash drive at the same time.

One way to get around the flaws of computer manufacturers may be to purchase special equipment - a USB hub. This miracle, when connected to a port, gives several output sockets at once, into which several devices can be inserted.

Types of concentrators

There are several modifications of hubs on sale:

Connected directly to system board. In order to use this type devices, you will need to remove the PC case cover. For those who are not entirely confident in their computer literacy, it is better not to buy such equipment. In case of an error, the damage will be estimated at thousands of rubles.
The second category of these devices is much easier to use, since they can be connected to one of the USB sockets located outside. The number of connectors available at the output can reach 5. However, it is better not to connect some energy-intensive devices to them.
The third type of hubs is generally similar to the previous one, with only one exception: in addition to connecting to a computer, they need power from the network for their stable operation. This solves the problem with energy-hungry peripheral computer devices.
The fourth group of concentrators has a very highly specialized field of application. Namely, they are suitable only for portable portable PCs (laptops)

What does a hub port lack of power mean?

This is a fairly common problem with type 2 hubs. Let's highlight the main possible reasons and ways to resolve them:

There are too many power-hungry devices connected to the hub. The equipment simply cannot cope with the load placed on it. The only thing that can be recommended as a way out of the situation is to turn off too “gluttonous” devices.
If this error is typical for absolutely all hub ports, then most likely the problem is in the hub itself. As a rule, this indicates a broken wire or problems with the hub chip.
Another common problem is related to using so-calledUSB extenders. This is a cable (usually 1-2 meters long), which is often purchased by modem owners mobile internet, in order to place the Internet device closer to the window. However, cheap Chinese cables have incredibly high resistance, and virtually no energy reaches the device. In this case, it is worth purchasing a more expensive cable from a famous brand.

Increasing port power

In order to supply more power via USB, you need to follow several steps:

Find out all the information about your computer and its structural components. This can be easily done using the Everest utility. To do this, just run the scan and wait a few minutes. After that, find the item with the motherboard model.
If the board model allows for increased power supply through the ports, then the next step is to open the window BIOS settings. Then you need to increase the indicator to the maximum, exit the program and save the settings. In the case of outdated models mother cards This is impossible to do, so the only way out of the situation is to update your computer.
You can also purchase a separate power supply that connects to this type of socket.
Another way to fix the problem is to use a special adapter that increases the voltage supply. At the same time, you should pay attention to the quality of the product, since cheap crafts labeled “made in China” tend to damage the ports.

How to choose an active hub?

Perhaps the surest way to provide sufficient power to each USB device is to buy a splitter that receives extra food from a regular power supply and distributes it at the output.

Here are the ingredients for a successful purchase:

You shouldn't skimp on a quality device. The price of good hubs can reach up to 3,000 rubles, but such gadgets are worth the money.
Don't contact Chinese online stores. Firstly, the quality of these devices without a name is very controversial. Miracle machines from the Middle Kingdom have broken the computer of more than one gullible user. Secondly, delivery from China can take a month or more. That's why The best way to buy a good product here and now - visit the page of a large chain store.
Pay attention to the brand. Recognized masters in their field: Hama, TP-Link and Greenconnect. It is better not to buy unknown brands.
The distance between the jacks on the hub also matters. Some users complain about the lack of space to connect all the necessary devices.
If you have the opportunity to hold the equipment in your hands, you need to estimate its mass. It should be neither too small nor too large.
Carefully inspect the power cable and its attachment location. This is one of the most common “sore spots” of hubs.

The use of cheap power strips in combination with power-hungry devices is the most common reason why a USB hub port lacks power. What to do depends on financial resources.

Consumers of data storage products often experience that their devices do not have enough power from the USB connector.

Because of this, devices do not work as they should - they are constantly turned off, periodically disappear from the list of drives, or do not turn on at all.

Moreover, this happens, as always, according to the law of meanness, at the most inopportune moment, when you urgently need to gain access to your data. The article will discuss how to provide your portable hard drive with good power.

I’ll immediately make a reservation that this problem arises with the USB 2.0 port, since the more modern version of USB 3.0, according to the specification, has a higher output power, which is quite enough to start and operate the drive.

So, what to do if there is a lack of nutrition?

There are two options. The first is simple: you need to find a very short USB cable - about 15-20 cm. From my experience, losses on such cables are minimal, so HDD It will work even from an old USB port.

Usually such a wire can be bought at one of the computer markets or shops, and in addition, a well-known manufacturer of portable products likes to put such wires in their product kits Western Digital.

The chance that a short cable will fix the problem is quite high. In addition, such a “cord” is convenient to carry with you, it is lightweight and does not take up much space even in a tiny purse or small handbag.

Option two - you'll have to fork out a little. You need to buy a device that will feed your hard drive. There are also two ways here. You can take an internal solution or an external one. The first is suitable for owners of desktop computers, the second - for owners of laptops and other portable equipment.

An external solution includes purchasing a USB hub (hub) for 4-7 ports with external unit power supply, which has enough power to power devices in all ports at once.

It may seem that I am being picky, however, as practice shows, sockets become clogged with devices quite quickly, and soon there may not be enough of them. Secondly, this is extra space on the table and a bunch of additional wires. For lovers of minimalism, and simply order on the table, this option will not seem the best.

The internal solution is much better in this regard. Purchase a three-inch internal USB splitter powered by a Molex connector.

This device also has a card reader, so in addition to everything you get a memory card reader, which is a definite plus.

Since no power supply is required (electricity comes from the computer's power supply), such devices are usually very cheap. Their price rarely exceeds 250-350 rubles.

In this case, the solution is very elegant - it does not take up space on the table, there are no unnecessary wires, everything is at hand.

It will be especially convenient for those users who do not have front USB ports on the computer case (only on the rear panel).

The downside is that such a device will only work with desktops, and also only if you have motherboard There is a free internal connector. It should be noted that in modern motherboards such internal connectors are a dime a dozen.

Why is there not enough power for USB devices?

What is the cause of food shortage? The USB 2.0 port at a voltage of 5 Volts is capable of delivering a current of only 0.5 Amperes. That is, the power of one port will be 2.5 Watts. Starting current hard drive also amounts to 0.5 (and sometimes a little more) Ampere.

If the computer's power supply (like itself) is not new, then it may not output 5 volts, but, say, 4.6-4.8 volts. That is, the total power may decrease, limiting the power supply to the hard drive that is already working at the limit.

A long wire has more resistance than a short one, which also reduces the power supply to the hard drive. Fortunately, manufacturers of portable hard drives take this problem into account and set hard disks with less consumption.

True, this does not have the best effect on speed characteristics.

A more modern USB 3.0 connector according to the specification has a current of 0.9 Amperes (almost 2 times more previous version). Therefore, such devices do not have problems with power supply.

In addition, this connector provides higher data transfer speeds. Since there is backward compatibility, then USB device 3.0 can be connected to USB port 2.0.

In this case, it will work in compatibility mode at lower speeds. Therefore, I recommend buying hard drives with USB 3.0.

Even if your computer does not have this modern connector, it will be a good foundation for the future. When it appears, you will see a significant increase (3-4 times) in speed.

If you have any questions, write them in the comments.

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Source: http://pc-hard.ru/hardarticles/88-usb-power-supply.html

How do I resolve a lack of power on a USB hub port?

Connectors on the computer system unit are often sorely lacking, so many users purchase additional devices - hubs.

But not everyone understands electronics, and often there is a lack of power supply to the USB hub port.

Anyone who encounters such a message on the monitor screen has to figure out what to do in this situation.

What is a USB hub

Low-power speakers;
Keyboards;
Mice;
Modems;
Portable flash drives;
Charging cables for smartphones, etc.

Thus, there is a dissonance between the need to connect several devices to the machine and the limited number of ports. For example, the latest model MacBook computer has only one slot of this type: as a result, it will be impossible to charge the device and use a flash drive at the same time.

One way to circumvent the shortcomings of computer manufacturers may be to purchase special equipment - a USB hub. This miracle, when connected to a port, gives several output sockets at once, into which several devices can be inserted.

Types of concentrators

There are several modifications of hubs on sale:

Connected directly to the system board. In order to use this type of device, you will need to remove the cover of the PC case. For those who are not entirely confident in their computer literacy, it is better not to buy such equipment. In case of an error, the damage will be estimated at thousands of rubles.
The second category of these devices is much easier to use, since they can be connected to one of the USB sockets located outside. The number of connectors available at the output can reach 5. However, it is better not to connect some energy-intensive devices to them.
The third type of hubs is generally similar to the previous one, with only one exception: in addition to connecting to a computer, they need power from the network for their stable operation. This solves the problem with energy-hungry peripheral computer devices.
The fourth group of concentrators has a very highly specialized field of application. Namely, they are suitable only for portable portable PCs (laptops)

What does a hub port lack of power mean?

This is a fairly common problem with type 2 hubs. Let us highlight the main possible causes and ways to resolve them:

There are too many power-hungry devices connected to the hub. The equipment simply cannot cope with the load placed on it. The only thing that can be recommended as a way out of the situation is to turn off too “gluttonous” devices.
If this error is typical for absolutely all ports of the hub, then most likely the problem is in the hub itself. As a rule, this indicates a broken wire or problems with the hub chip.
Another common problem is related to using so-calledUSB extenders. This is a cable (usually 1–2 meters long), which is often purchased by owners of mobile Internet modems in order to place the Internet device closer to the window. However, cheap Chinese cables have incredibly high resistance, and virtually no energy reaches the device. In this case, it is worth purchasing a more expensive cable from a famous brand.

Increasing port power

In order to supply more power via USB, you need to follow several steps:

Find out all the information about your computer and its structural components. This can be easily done using the Everest utility. To do this, just run the scan and wait a few minutes. After that, find the item with the motherboard model.
If the board model allows for increased power supply through the ports, then the next step is to open the BIOS settings window. Then you need to increase the indicator to the maximum, exit the program and save the settings. In the case of outdated models of mother cards, this cannot be done, so the only way out of the situation is to update the computer.
You can also purchase a separate power supply that connects to this type of socket.
Another way to fix the problem is to use a special adapter that increases the voltage supply. At the same time, you should pay attention to the quality of the product, since cheap crafts labeled “made in China” tend to damage the ports.

How to choose an active hub?

Perhaps the surest way to provide sufficient power to each USB device is to buy a splitter that receives additional power from a regular electrical outlet and distributes it at the output.

Here are the ingredients for a successful purchase:

You shouldn't skimp on a quality device. The price of good hubs can reach up to 3,000 rubles, but such gadgets are worth the money.
You should not contact Chinese online stores. Firstly, the quality of these devices without a name is very controversial. Miracle machines from the Middle Kingdom have broken the computer of more than one gullible user. Secondly, delivery from China can take a month or more. Therefore, the best way to buy a good product here and now is to visit the page of a large chain store.
Pay attention to the brand. Recognized masters in their field: Hama, TP-Link and Greenconnect. It is better not to buy unknown brands.
The distance between the jacks on the hub also matters. Some users complain about the lack of space to connect all the necessary devices.
If you have the opportunity to hold the equipment in your hands, you need to estimate its mass. It should be neither too small nor too large.
Carefully inspect the power cable and its attachment location. This is one of the most common “sore spots” of hubs.

The use of cheap power strips in combination with power-hungry devices is the most common reason why a USB hub port lacks power. What to do depends on financial resources.

Ideally, you need to purchase a more expensive hub, but if this is not possible, then you will have to avoid connecting power-hungry devices through problematic ports.

-solution: fix the error

In this video, Dmitry Zakharov will tell you how to fix the “insufficient power supply to the USB hub port” error in Windows 8.1.

04.10.2008, 01:13

There was a problem with Intel board 945GCLF.
When connecting any USB device, XP complains: “Lack of power supply to the hub port...” This also happens when connecting a wheelbarrow or even a flash drive. If you plug in the flash drive before turning on the computer, it will complain, but work. If you plug it in after booting, the USB port is completely disabled. The same thing happens with the touchscreen, but two devices at the same time do not work at all. Question: is it possible to somehow add power to it or will I have to attach an active hub?

04.10.2008, 08:35

Have you installed all the drivers?

04.10.2008, 09:02

04.10.2008, 10:00

I have the same board and everything works ok for me, I occupied almost all the ports and everything works.
Everything works fine for me too. Vyacheslav, describe the computer config.

04.10.2008, 11:08

Maybe the power supply is not enough?
I have no problems either:dntknw:

04.10.2008, 22:38

PSU - E-10000, doesn’t even heat up. The first time I installed the drivers from the disk included with the board, then I changed the 2.5-inch screw, rearranged the system again, lost the original disk, downloaded the latest drivers from the Intel website, but just like the first time, it’s still the same crap. Windows installed XP SP2, and on top of SP3 (maybe the dog is buried here). The drivers were installed by Chipset, Audio, Video, Lan. Antivirus NOD32. Maybe I should look at some settings in the setup?

06.10.2008, 14:12

06.10.2008, 14:24

Well, no one can tell you where to dig?

Measure +5V of a powerful power supply is not an indicator of stability: yes4:

P.S. Was this initially or after some actions?

06.10.2008, 23:26

Ok, I'll measure it tomorrow. Appeared originally.

07.10.2008, 07:25

Try turning it on with the power supply from your home computer.

09.10.2008, 12:48

Measure +5V of a powerful power supply is not an indicator of stability: yes4:

Voltage 5.18V

10.10.2008, 12:01

In general, some crap is going on. Yesterday I connected my mother to a regular power supply. He stopped complaining about the lack of power supply, but more than one USB device still does not work, it says that it was not possible to connect the USB device and is not working correctly. Moreover, in the process of poking around the wheelbarrow, flash drive and bluetooth, Windows stopped loading when the wheelbarrow is connected, you pull it out - it loads, then you insert it - it works, but complains about incorrect operation. I removed the firewood from the wheelbarrow and reinstalled it - it didn’t help. With a regular power supply, 5V=5.12 from the power supply output and 5.06 on the USB connector.

10.10.2008, 12:09

It seems to me that the mother is not working properly

14.10.2008, 23:07

I left the computer for a few days and turned it on again today. First, with a regular power supply: It started booting normally, doesn’t complain about a lack of power supply, but the flash drive and the touchscreen don’t want to work at the same time. When the computer boots with the touchpad connected, I insert a USB flash drive, the LED built into it lights up for a second and goes out (when everything is constantly on normally), and Windows writes that it could not detect the USB device. If I boot the computer with the touchscreen disabled, the flash drive works fine, I connect the touchscreen - the computer simply does not see it. And bluetooth works in all combinations. It turns out that there is some kind of incompatibility between the wheelbarrow and the flash drive. Then I connected the mother to the E10000, everything was the same, I still didn’t understand what the glitch was with the lack of power supply. I just removed and reinstalled the same touch driver. Tomorrow I'll try another flash drive, maybe it will work.

14.10.2008, 23:47

Voltage 5.18V

At what point did you measure this? and most importantly where?

It is necessary to measure directly on the USB outputs under load, i.e. with devices plugged in

PS power supply to usb extreme terminals

15.10.2008, 11:12

I have the same mother works fine with all 6 USB ports
1. BT
2. Joystick
3. USB Radio
4. Flash drive
5. Mouse
6. Touch from Prologi 1/2 din monitor

The mother runs on an M3-ATX power supply, which at home is powered by a regular 350W computer unit

15.10.2008, 13:32

The same thing is happening to me with this mom! At the beginning everything was ok until I plugged in a 3D mouse and the lack of power supply started popping up! When I turned it off everything went back to normal! but yesterday I tried to plug it in through a usb hub, and not directly to the computer as before, and everything became fine.... for some time until I rebooted the computer... and again this inscription! I just want to know if it’s possible to disable it somehow, let it appear there inside Windows just so I don’t see it)))))))) :acute: I think there will be no consequences:pleasantry:

15.10.2008, 14:46

Is USB2.0 support disabled/enabled in the mother's BIOS? Winda, of course, would have yelled differently, but it’s worth checking.

24.10.2008, 13:08

Hurray it worked! She no longer complains about lack of nutrition. Updating the BIOS to version 103 helped, before that I had 038 - this is the original version, then there were a lot of fixes. By the way, support for 800x480 resolution appeared there, I tried it, but didn’t like it, so I switched back to 800x600.
True, my favorite flash drive still doesn’t want to work in any port. Writes unknown USB device, as if there are not enough drivers: sad2:

24.10.2008, 17:04

It's good that my mother earned money. But it feels like yours is a little buggy. Such urges happen when the mother herself USB controller burnt a little.
And mcf1 correctly noted that you need to check the voltage at USB itself and under load. I think the installation USB hub I would help you with separate meals.

25.10.2008, 00:55

I measured the power on the USB connector. With the E10000 unit it turns out 5.11v, although this is on the pin connector inside the mother and not with the full load. I'll try to measure it later with all devices connected on the connector on the back wall - I'm afraid to short-circuit the case there.
In general, today I played with the computer during the day and decided that the touchscreen was to blame for everything. The monitor I have is this CE-7400 (http://car-electronics.ru/component/page,shop.product_details/flypage,shop.flypage/product_id,196/category_id,42/manufacturer_id,0/option,com_virtuemart/Itemid, 43/vmcchk,1/), there the touchscreen is connected, as I understand it, through an additional built-in USB hub and for some reason there is an additional USB output on the monitor itself. It’s this additional concentrator that seems to ruin your whole life. Bluetooth, flash drive and USB mouse live without a touchscreen and do not conflict with each other. If loading in progress When Bluetooth or a flash drive is connected, the hub built into the monitor does not turn on, and the touchscreen accordingly does not work. If during booting I turn off everything except the touchscreen, the touchscreen works and bluetooth can then be connected, but the flash drive doesn’t work at all. The mouse works in all versions.
It seems to me that I need to cut off 5V at the wheelbarrow connector and run it separately. It’s interesting, but in the monitor itself, that 5V is not generated and why didn’t the designers then supply power to the touchscreen from the monitor itself?

25.10.2008, 03:54

This is definitely a problem of lack of power at 5 volts from the mother. The best thing is to install a USB hub (hub) with a separate power supply, which you can take from the power supply and turn on all your USB devices through it. And USB on the monitor is convenient - you can plug in flash drives or CDs here, if, of course, you have access to it.

27.10.2008, 23:53

So today I rang the cable from Monica up and down - it doesn’t take 5V from the computer’s USB. Both signal and ground are present, but there is no power, which means it is generated inside the monica. On the USB connector itself, with all my USB devices connected, the voltage is 5.12V. It's not all about the load.
I already got this touchscreen, it wants to turn on, it wants to not turn on, I haven’t found any strict logic. It happens that it is the only one that is turned on and does not work after a reboot, and once after dancing with deleting and connecting in the device manager, everything worked at the same time, but after a reboot the same song again. I'm already scratching my head about what to come up with. Maybe a driver for the wheelbarrow from some other Monica can be selected?

28.10.2008, 00:06

As I understand it, the problem remains only with the lost touchscreen?
I looked through the entire thread but still couldn’t find what kind of monique it was.

Write what kind of monitor, what kind of driver (name, version)
sometimes replacing firewood helped
In extreme cases, you will have to buy a touchscreen controller separately, this will definitely help.

28.10.2008, 18:46

In post 21 he wrote:
The monitor I have is this CE-7400 (http://car-electronics.ru/component/page,shop.product_details/flypage,shop.flypage/product_id,196/category_id,42/manufacturer_id,0/option,com_virtuemart/Itemid, 43/vmcchk,1/), there the touchscreen is connected, as I understand it, through an additional built-in USB hub and for some reason there is an additional USB output on the monitor itself. It’s this additional concentrator that seems to ruin your whole life.

The drivers are the ones that came with the Monica. Some kind of universal TouchKit 5.0.0.5017. Today I found and installed more old version 4.3.8.4207, but the same thing. Now I found the author of the driver, downloaded the most latest version 5.0.1.5310, I'll try it.

28.10.2008, 21:31

then buying a separate touch controller will save

30.10.2008, 02:03

New firewood didn't help either. So I managed to buy the wrong Monique, I thought I saved money.
It looks like the problem is not so much with the wheelbarrow controller, but with the additional USB hub in front of it in the Monica. When the touch does not work, in the device manager Exclamation point It is located on the additional hub. Accordingly, everything that is connected to it, i.e. The wheelbarrow controller and the additional USB connector in the Monica also do not work.
The idea is this: I want to physically exclude the additional USB hub from operation, i.e. find the m/cx hub, cut off the inputs and outputs, and transfer the input of the m/cx wheelbarrow directly to the USB connector. I just don’t know on which microcircuits these things can be implemented. You probably can’t even dream about the Monica circuit, but from the datasheet on m/sx you can probably somehow decide. Maybe someone can tell me?

Consumers of data storage products often experience that their devices do not have enough power from the USB connector. Because of this, devices do not work as they should - they are constantly turned off, periodically disappear from the list of drives, or do not turn on at all. Moreover, this happens, as always, according to the law of meanness, at the most inopportune moment, when you urgently need to gain access to your data. The article will discuss how to provide your portable hard drive with good power.

So, what to do if there is a lack of nutrition.

There are two options. The first is simple: you need to find a very short USB cable - about 15-20 cm. From my experience, losses on such cables are minimal, so the hard drive will work even from an old USB port.

Typically, such a wire can be purchased at one of the computer markets or dealerships, and in addition, the well-known manufacturer of portable products, Western Digital, likes to include such wires in their product kits. The chance that a short cable will fix the problem is quite high. In addition, such a “cord” is convenient to carry with you, it is lightweight and does not take up much space even in a tiny purse or small handbag.

An external solution includes purchasing a USB hub (hub) for 4-7 ports with an external power supply that has enough power to power devices in all ports at once.

The advantage of this solution is its versatility. It can be used with a laptop, a desktop, or any device in general. If necessary, such a hub can easily be thrown into a bag and taken to work / to a friend / to the country, etc. However, there are also disadvantages, although not significant. Firstly, there is an extra occupied outlet. It may seem that I am being picky, however, as practice shows, sockets become clogged with devices quite quickly, and soon there may not be enough of them. Secondly, this is extra space on the table and a bunch of additional wires. For lovers of minimalism, and simply order on the table, this option will not seem the best.

The internal solution is much better in this regard. Purchase a three-inch internal USB splitter powered by a Molex connector. This device also has a card reader, so in addition to everything you get a memory card reader, which is a definite plus. Since no power supply is required (electricity comes from the computer's power supply), such devices are usually very cheap. Their price rarely exceeds 250-350 rubles.

In this case, the solution is very elegant - it does not take up space on the table, there are no unnecessary wires, everything is at hand. It will be especially convenient for those users who do not have front USB ports on the computer case (only on the rear panel). The downside is that such a device will only work with desktops, and also only if you have a free internal connector on the motherboard. It should be noted that in modern motherboards such internal connectors are a dime a dozen.

Why is there not enough power for USB devices?

What is the cause of food shortage? The USB 2.0 port at a voltage of 5 Volts is capable of delivering a current of only 0.5 Amperes. That is, the power of one port will be 2.5 Watts. The starting current of a hard drive is also 0.5 (and sometimes a little more) Ampere. If the computer's power supply (like itself) is not new, then it may not output 5 volts, but, say, 4.6-4.8 volts. That is, the total power may decrease, limiting the power supply to the hard drive that is already working at the limit. A long wire has more resistance than a short one, which also reduces the power supply to the hard drive. Fortunately, manufacturers of portable hard drives take this problem into account and install hard drives with lower consumption. True, this does not have the best effect on speed characteristics.

The more modern USB 3.0 connector, according to the specification, has a current of 0.9 Amperes (almost 2 times more than the previous version). Therefore, such devices do not have problems with power supply. In addition, this connector provides higher data transfer speeds. Since there is backward compatibility, a USB 3.0 device can be plugged into a USB 2.0 port without any problems. In this case, it will work in compatibility mode at lower speeds. Therefore, I recommend buying hard drives with USB 3.0. Even if your computer does not have this modern connector, it will be a good foundation for the future. When it appears, you will see a significant increase (3-4 times) in speed.

If you have any questions, write them in the comments.