The steps are as follows:
The first is the surge on the hub.
This is caused by the lack of USB power supply, but what is the good solution? Open System Properties-Hardware-Device Management-Universal Serial Bus Controller, right-click the first few long items listed below in turn, click Properties, and under the Advanced tab, check whether the box before "Don't notify me of USB error (D)" in the last line is ticked. If it is not checked, check it! No more annoying messages like "Hub Port Surge" will pop up!
2. When the mobile hard disk is plugged into the USB interface, a message box of "hub port surge" will pop up, prompting that "a USB device exceeds the power limit of its Hub port".
The solution to this problem is as follows: This is a power problem, and USB devices consume up to 500 milliamps (mA) each time they are connected. If a device tries to consume more current than this, the operating specification will call the corresponding function to disable a specific port until the system power is turned off and then turned on (this is called a "suspended" port).
1. If possible, add an external power supply to the USB device. You can use an active USB hub, which is not very expensive, about 100 yuan.
2. Connect both connectors: generally, there is one connector on one side and two connectors on the other side of the usb cable of the mobile hard disk. Plug one end into your hub and the other two ends into the usb interface of the computer, which can solve the problem of insufficient power supply. Plug in both USB plugs on the mobile hard disk, it may be that the power supply of the mobile hard disk is insufficient! This is actually to get power from the keyboard port, that is, PS/2 port (USB cable comes with a PS/2 port).
3. Short circuit: Generally, the front USB interface of the chassis is short circuit (wires or interfaces are possible, and there may be conductive foreign objects in the front and rear interfaces). Unplug the front connector from the motherboard to see if it is ready. Or the usb interface is plugged and the internal data line is short-circuited, just separate the two wires of the usb interface. If it is a chassis usb, just disconnect the cable on the main version.
4. Try not to use the hub when moving the hard disk: the USB front port is prone to power shortage (except for the one powered by the Hub). Try plugging it into the USB port on the back of the chassis. If you use USB hub, it will be shunted, and the current is not enough to drive USB devices. If your mobile hard disk is 2.0. Using a hub will affect the speed even more.
5. Dust removal: For all usb ports, back, front and pins in the motherboard, including all connectors.
Third, the fault phenomenon:
Sometimes, a surge warning appears on the hub port in the lower right corner of the computer. Sometimes, with the click of the mobile hard disk, the indicator light flickers and the computer can't find the device.
Solution:
1. Hub Port Surge Warning: You can see the power consumption of the USB device in use in Device Manager -USB Controller-USB Broth UB-Power Supply. Due to the frequent plugging and unplugging of USB devices, or unplugging USB devices when transmitting data, it is easy to cause the instantaneous current of USB interface to be too large, thus giving an error. Usually pay attention to safely uninstall USB devices, there will be no problem.
2. Confirm that the USB driver is installed correctly.
3.USB-IF stipulates that the power supply provided by USB port is 5V/500mA, but at present, many peripherals need more power than this standard. Especially for devices such as external hard disk boxes or mobile hard disks, this situation is easy to occur when using. Sometimes using a long USB cable or using multiple USB devices at the same time may also lead to insufficient USB power supply.
Click on the mobile hard disk: the power supply demand of USB devices exceeds 500mA. At this point, click the USB icon, and then select "Reset". If the USB device still cannot be used, it can be correctly identified and used. Can be connected to a special transformer for USB equipment; Take electricity from PS/2 port and USB port of computer to enhance power supply; Replace USB hard disk box or low-speed hard disk; USB hard disk box powered by dual USB plugs; Do not use USB extension cable, USB device should be plugged into the USB interface at the back of the machine to avoid signal attenuation; Do not use multiple USB devices at the same time, which can generally solve this problem. In addition, this problem can be solved by installing an active USBHUB.
Four, the surge on the hub port:
The USB device that exceeds the power limit of its hub port has insufficient power. At first, you can still see the hard disk through reset, but there will be a surge prompt after about 2 seconds, and then you will be prompted directly after reset. I didn't expect this question to be so difficult. In response to this problem, I collected the following main points on the Internet:
1, the power supply of the motherboard is insufficient.
2. The internal components of the hard disk are damaged.
3. The USB interface of the computer is damaged.
4. There is something wrong with the motherboard driver or hard disk driver.
5. Power supply problem (mainly desktop)
6. The South Bridge is damaged.
Fifth, first of all, if there is a problem, you can use the following methods to test whether the hardware is faulty.
1, go to BIOS and device manager to check whether the USB port is disabled and make sure that the USB port is available.
2. Plug other available USB devices into the computer. If all USB ports can supply power normally, it means that there is basically no problem with the USB ports on your computer, which may be a short circuit problem. Generally, the USB port in the front of the chassis is short-circuited (wires or interfaces are possible, and there may be conductive debris in the front and rear interfaces). Unplug the front USB port from the motherboard to see if it is intact. It is also possible that the USB port is broken and the internal data cable is short-circuited. Put the USB port.
3. Generally, when the small hard disk in the mobile hard disk is larger than 40GB, it is best to use three USB plugs, one of which is the longest plug connected to the mobile hard disk, and the other two plugs are inserted into the USB socket. One of the two USB sockets is used for power supply and signal path, and the other is only used for power supply. If this three-plug connection has been used and the power supply is still insufficient, then we will continue with the following steps.
4. Take out the small hard disk in mobile hard disk box, and only plug mobile hard disk box into the USB socket of the host. If there is no response, it is mobile hard disk box's fault. If the hardware can be found and installed, it is that the power supply of the mobile hard disk is insufficient.
5. If possible, add an external power supply to the USB device.
6. Try not to use the hub by moving the hard disk: the USB front port is easy to run out of power (except for the power supplied by the hub). Try plugging it into the USB port on the back of the chassis. If you use USB hub, it will be shunted, and the current is not enough to drive USB devices. If your mobile hard disk is 2.0. Using a hub will affect the speed even more.
7. Dust removal: For all usb ports, back, front and pins in the motherboard, including all connectors.
8. If the above method fails, 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 haven't tried this problem.
The possible reason for this phenomenon is that the driver of a certain device is not installed correctly. If this is the first time you find this fault, you can restart the computer to check it again, or enter safe mode to check the equipment again. If you see this prompt many times, it may indicate that there is something wrong with the hardware of the equipment you installed. Please contact the merchant.
9. Changing the usb driver from 2.0 to 1. 1 can solve the problem (caused by transient overvoltage of USB device with external power supply).
10, the above method is still invalid, and it can basically be judged as an internal fault of the mobile hard disk. Desktop computers may also have power problems. In a word, it is due to hardware, so it can only be sent for repair.
The specific principle is as follows:
The power supply of the motherboard is insufficient, and the following prompt appears: hub port surge: a USB device exceeds the power limit of its hub port ". You can plug in the interface again, or uninstall USB devices with question marks or exclamation marks in Device Manager, and then automatically search for device installation. Or try to reinstall another version of xp.
Causes and solutions of power supply problems of intransitive verbs. Generally speaking, there are four reasons for the power problem of USB interface hard disk box:
① Under normal circumstances, the lack of power supply has nothing to do with the box, but is caused by the weak power supply capacity of the USB port of the motherboard. The phenomenon of insufficient power supply is particularly obvious in some notebook computers, because notebook computers have stricter restrictions on the power supply of motherboard ports than desktop computers. Although USB-IF stipulates that the power supply provided by USB port is 5V/500mA, at present, many peripherals need more power than this standard. In view of this situation, a considerable number of notebook manufacturers have surpassed the USB-IF standard and improved the power supply capacity of USB port to adapt to high-energy-consuming peripherals. However, there are still many models that design USB oral capacitance in strict accordance with USB-IF standard. When this model is in close contact with the mobile hard disk, there will be an embarrassing scene-insufficient power supply, because most hard disks above 20G consume 700mA (for example, Samsung's 2.5-inch hard disk) or 1000mA (for example, Hitachi's 2.5-inch hard disk).
② The hard disk consumes too much energy. As mentioned earlier, the power consumption of mainstream hard disks is mostly above 500mA, and only small hard disks below 20G consume 500mA, which is a thing of the past. Strictly speaking, it is of little significance to talk about this reason, which can basically be ignored.
③ The circuit design of the hard disk box is unreasonable, or accessories such as chips with high energy consumption are adopted-often the performance of the chips is directly proportional to the energy consumption. This will lead to a mild power shortage.
④ The USB cable is too long or too many USB devices are used at the same time. Because USB cable plays a dual role of data transmission and power supply, too long cable will lead to increased resistance and data interference, resulting in insufficient power supply.
This is the end of the solution to the surge phenomenon of hub port in WinXP system. Users who encounter the same problem may wish to solve it according to the above methods. After the operation, the annoying message "Hub port surge" will not pop up again!