Home >Common Problem >What to do if the power supply of the USB flash drive is insufficient in win7 system - What to do if the power supply of the USB flash drive in win7 system is insufficient
What should I do if the power supply of the USB flash drive in win7 system is insufficient?When we use the computer, the USB flash drive is an important tool for us to store the files we need to carry every day, but sometimes after inserting it into the computer , but cannot be read normally, this may be caused by insufficient power supply of the computer system. Many users do not know why this problem occurs, and naturally they will not solve it. Below, the editor will bring you a win7 system USB disk. Solution to insufficient power supply.
1. External power supply method
With the continuous improvement of various technical indicators of USB devices, its working current is also "increasing". For example, the working current of some mobile hard drives with extremely fast rotation speed has sometimes reached the 1A standard. Such power has More than double the normal power, so it is no longer realistic to rely solely on the USB interface to provide sufficient power source for USB devices. For this reason, when we use high-power USB devices, we must equip them with a separate external power supply, so as to ensure the stability of the USB device and the computer system.
2. Interface replacement method
Nowadays, many USB device manufacturers, in order to make the USB devices they produce have enough "use", often provide several different connection interfaces for USB devices. Once the USB device cannot be obtained from the USB interface When there is enough power source, you can also use other ports that consume less power to connect, ensuring that USB devices can be used normally. For example, the USB interface of some mobile hard disks often does not work properly when connected to an old motherboard. However, if another PS/2 interface is used to connect it to a computer, the mobile hard disk can work normally.
3. Reduce power method
Under normal circumstances, the power supply of each USB port in the motherboard is 0.5A. If the rated current of the USB device during normal operation exceeds this standard, the motherboard will not be able to accurately identify the USB device; at this time, the only The feasible way is to choose a USB device with low power consumption, or choose a USB device with an independent power supply to ensure that the USB device works normally.
4. Method of eliminating dissidents
The so-called "exclusion method" is to unplug other USB devices that are not used temporarily from the USB port of the motherboard, leaving only the USB devices that urgently need to work. This allows the motherboard to provide separate services for the USB devices. source of power to ensure that the device can work properly. Considering that every two USB ports in newer motherboards are divided into a group, each group uses a separate power supply, so when other USB devices are plugged into the port in the same group as the current USB device, then the current USB device is powered by a separate power supply from the motherboard. The power energy obtained from the USB device will be affected, so when you find that the current USB device is insufficiently powered, be sure to unplug other USB devices that are temporarily unused, or insert it into another set of USB ports.
The above is the detailed content of What to do if the power supply of the USB flash drive is insufficient in win7 system - What to do if the power supply of the USB flash drive in win7 system is insufficient. For more information, please follow other related articles on the PHP Chinese website!