How to solve the surge on the WinXP hub port?

Usually, the power surge on the hub port is caused by the weak USB power supply. Why is there a surge on the hub port? How to solve this phenomenon? Now let's take a look at the power surge on the WinXP hub port with Xiaobian.

The steps are as follows:

First, the surge on the hub. This is caused by insufficient USB power supply, but is there any good solution? Open System Properties - Hardware - Device Management - Universal Serial Bus Controller, right-click on the first few long items listed below, click Properties, under the Advanced tab, check in the last row & rdquo; Do not notify me USB error (D) & rdquo; whether the box in front of the check mark, if not ticked, hit it! In the future, it will not pop up again. "The surge on the hub port" is an annoying news!

Second, when the mobile hard disk is plugged into the USB interface, a message box of “surge on the hub port” is displayed, saying “a USB device exceeds the power limit of its hub port” & rdquo ; The solution to this problem is as follows: This is a power issue and the USB device can consume up to 500 milliamps (mA) of current per connection. If a device attempts to consume more current than this, the specification will call the appropriate function to disable that particular port until the system power is turned off and on (this is called "suspending” port).

1. If you have the condition to add an external power supply to the USB device. You can use an active USB hub, this price is not very expensive, about a hundred or so.

2. Both connectors are connected: the usb cable of the general mobile hard disk has one connector on one side and two on the other side. One end is inserted in your hub, and the other two are fully inserted in the computer. On the usb interface, this can solve the power shortage. Plug in the two USB plugs on the mobile hard disk, it may be that the mobile hard disk is not enough! This is actually taking power from the keyboard port, PS/2 port (USB line comes with a PS/2 port).

3. Short circuit: Generally, there is a short circuit in the front USB interface of the chassis (wire or interface is possible, there may be conductive foreign objects in the front and rear interfaces), and the front port is unplugged from the motherboard to see No. Or the usb interface is broken, the internal data line is shorted, and the two wires in the usb port are separated. If it is the chassis usb, the line on the main board is not connected.

4 Mobile hard drives try not to use hubs: USB front ports are not easily powered (except for the hub's own power supply). Plug in the USB port on the back of the chassis as much as possible. If you use a USB hub, it will be shunted, and the current is not enough to drive the USB device. If your mobile hard drive is 2.0. Using a hub will affect speed.

5. Dust removal: For all usb ports, the rear, the front, and the pins inside the motherboard, including all connectors.

Third, the phenomenon of failure: Sometimes there will be a surge warning on the hub port in the lower right corner of the computer. Sometimes the accompanying mobile hard disk hums, the indicator light flickers, and the computer cannot find the device.

Solution:

1. Surge warning for hub ports: in <;Device Manager> --" "Universal Serial Bus Controller>-“ USB Root Hub” --" <;Power” can see the power consumption of the USB device being used. Due to the frequent plugging and unplugging of the USB device, or when the USB device is pulled out while transmitting data, it is easy to cause the instantaneous current of the USB interface to be too large, thereby reporting an error. Usually pay attention to safely uninstall USB devices without problems.

2. Confirm that the USB driver is installed correctly.

3, USB-IF specifies that the power supply provided by the USB port is 5V/500mA, but currently many peripherals require more than this standard. Especially for devices such as external hard disk boxes or mobile hard disks, this is easy to occur when using them. Sometimes using a long USB cable, or using multiple USB devices at the same time, may also cause insufficient USB power.

Beep for mobile hard disk: USB device power supply demand exceeds 500mA, then click USB icon and then select "Reset", USB device may be correctly identified and used, if still can not use. You can connect a dedicated transformer to the USB device; use the power supply mode from the PS/2 port and the USB port to enhance the power supply; replace the USB hard disk box or switch to a low-speed hard disk; use the USB hard disk box powered by the dual USB plug; With a USB extension cable, the USB device should be plugged into the USB port on the back of the machine to avoid signal degradation; do not use multiple USB devices at the same time, which generally solves this problem. It is also possible to solve this problem by installing an active USB HUB.

4. Surge on the hub port: A USB device exceeds the power limit of its hub port. At first, the hard disk can be seen through resetting, but after about 2 seconds, a power surge prompt appears, and then the reset is directly followed by a prompt. I did not expect this problem to be so tricky. In response to this problem, I collected the following main points on the network:

1, the motherboard power supply is insufficient

2, the internal components of the hard disk are damaged

3, computer USB Interface damage

4, motherboard driver or hard disk drive problem

5, power problems (mainly desktop)

6, south bridge damage

Fifth, if there is a problem, you can use the following method to test whether the hardware is faulty

1. Go to the BIOS and Device Manager to see if the USB port is disabled. Make sure the USB port is available

2, plug your other usable USB devices into the computer to see if all the USB ports can be powered normally, indicating that the USB port on your computer is basically no problem, it may be a short circuit problem, generally There is a short circuit in the front USB port of the chassis (wire or interface is possible, there may be conductive debris in the front and rear interfaces), and the front port is unplugged from the motherboard to see if it is in good condition or the USB interface is bad. The internal data line is shorted, and the two lines in the USB port are connected. Opening, if USB is the chassis, then unplug the lines on the motherboard.

3, the small hard disk in the general mobile hard disk is larger than 40GB, it is best to use three USB plug cable, one of the longest plug connected to the mobile hard disk, the other two plugs into the USB port, One of the two USB ports is used as the power and signal path, and the other is used only for power. If you have already used this three-plug connection or the power supply is insufficient, then we continue the following steps

4, remove the small hard disk in the mobile hard disk box, only insert the mobile hard disk box into the USB socket of the host, if Still no response, it is the mobile hard disk box is bad, if you can find the hardware and is available after installation, it is insufficient power supply for the mobile hard disk.

5,. If there is a condition to add an external power supply to the USB device

6, to move the hard disk, try not to use the hub: the USB front port is not easy to supply power (except for the hub's own power supply). Plug in the USB port on the back of the chassis as much as possible. If you use a USB hub, it will be shunted, and the current is not enough to drive the USB device. If your mobile hard drive is 2.0. Using a hub will affect speed.

7. Dust removal: For all usb ports, the rear, the front, and the pins inside the motherboard, including all connectors.

8. If the method is not working: Please check the driver of the mobile hard disk first, uninstall the driver of the mobile hard disk in safe mode, and reinstall the new driver provided by the manufacturer. I have not tried this question.

The possible cause of this phenomenon is because the driver of a device is not installed correctly. If this fault is discovered for the first time, you can restart the computer and then view it, or enter safe mode to recheck the device. If you have seen such a prompt many times, this may indicate that the hardware of your installed device is faulty, please contact the merchant.

9, replacing the USB driver of 2.0 with 1.1 can solve the problem (transient overvoltage caused by externally powered usb device)

10, all the above methods are still not working, basically can judge For internal failure of the mobile hard disk. Desktops may also have problems with the power supply. In short, the hardware is the reason. Under normal circumstances, it can only be sent for maintenance.

The specific principle is as follows: The power supply of the motherboard is insufficient, and the following prompt appears: “Surge on the hub port: a USB device exceeds the power limit of its hub port”. You can re-plug the interface, or uninstall the USB device with the question mark or exclamation mark in the device manager, and then automatically search for the device installation. Or try to reinstall another version of xp

6. Causes and solutions for power problems. In general, the USB interface hard disk box power supply problem has four reasons:

1 Usually the power supply is not related to the box, but the power supply capacity of the motherboard USB port is not strong. Insufficient power supply is especially noticeable on some laptops because laptops have more stringent limits on desktop port power than desktops. Although the USB-IF specifies that the USB port provides 5V/500mA, many of the peripherals require more than this standard. In response to this situation, a considerable number of notebook manufacturers surpass the USB-IF standard and improve the USB port power supply capacity to adapt to high-power peripherals. There are still a lot of models that follow the rules of the USB-IF standard to design USB port power supply capability. When this type of model is in close contact with the mobile hard disk, there will be a slap in the face — — power supply is insufficient, because most of the 20G or more The hard drive consumes 700mA (such as the Samsung 2.5-inch hard drive that just debuted) or 1000mA (such as Hitachi 2.5-inch hard drive).

2 The power consumption of the hard disk is too high. As mentioned above, the current mainstream hard disk power consumption is mostly greater than 500mA, and only the small hard disk power of 20G or less that is already tomorrow's yellow flower is 500mA. Strictly speaking, the reason for talking about this is not significant and can basically be ignored.

3 hard disk box circuit design is not reasonable, or the use of high-power chips and other accessories & mdash; & mdash; often chip performance and energy consumption is directly proportional. This can result in insufficient power supply for mild symptoms.

4 USB cable is too long or too many USB devices are used at the same time. Because the USB cable plays the dual role of data transmission and power supply, if the connection is too long, the resistance will increase and data interference will result in insufficient power supply.

The solution to the surge on the WinXP hub port is here. If you encounter such a problem, you can solve it according to the above method. After the solution is solved, it will not pop up again. "The surge on the hub port" is an annoying news!