Some computers are still on after the computer is turned off. This is because the motherboard has different settings for the keyboard and mouse boot function in different periods. Therefore, to turn off the keyboard and mouse power-on function, the keyboard and mouse lights are not bright after the host is turned off. The commonly used methods are divided into the following two types: 1. Turn off the keyboard and mouse in the BIOS. The boot function of most motherboards is currently provided in the BIOS. For the setting of the keyboard and mouse boot function, you can go to the “Power Management Setup” page of the BIOS main menu and find “S3 KB Wake-Up Function” or similar options (such as “Resume On KBC”, ““ Resume On PS/2 Mouse”etc.), set it to “Disable” to turn off the 5VSB power supply for the keyboard and mouse. The PS/2 optical mouse will not light up after the shutdown. BIOS Setup In addition, with the increasing use of USB peripherals, many motherboards also provide a USB keyboard and mouse boot function, on these motherboards USB optical mouse will continue to shine after shutdown. To turn off this feature, the process is similar to turning off the PS/2 keyboard and mouse. You can go to the “Power Management Setup” page of the BIOS main menu and set “USB Wake-Up From S3” or similar options to “ld”. ;Disable” I believe that friends who have a certain understanding of the BIOS can easily get these settings even if they don't look at the motherboard manual. 2, change the motherboard jumper For some of the early models of the old model motherboard, because the motherboard BIOS function is relatively single, these motherboards can only use the jumper to open or close the keyboard and mouse boot function. In order to turn off the keyboard and mouse power-on function, we must change the connection status of the corresponding jumper. For this reason, you must carefully read the motherboard manual —— there are many jumpers on the old motherboard. If you don't understand the meaning of the jumper, just set it. If the jumper is used, it will affect the normal function of the motherboard, and the motherboard will be damaged. This is especially important. The ultimate solution to solve the problem of light-off of the optical mouse. Although the above two methods can solve the problem that the mouse still shines after most of the shutdown, they are not omnipotent. Because some motherboards provide keyboard and mouse boot functions, the motherboard's BIOS does not provide the option to turn off this feature, there is no corresponding jumper on the motherboard. In addition, the phenomenon that some of the Intel chipset motherboards mentioned above are randomly supplied to the USB port cannot be turned off by the BIOS or jumper settings. If you use a USB optical mouse on the above motherboard, the scanner light of the mouse will not go out. In fact, the above two special cases are actually normal phenomena, which will not affect USB devices and have no security risks. However, if you feel that the mouse light that is still on after the shutdown is really unpleasant, then you can choose the ultimate and most useful method: cut off the 220V mains supply, that is, unplug the power cord or turn off the main switch of the socket (many Friends will concentrate the power cord of the main unit and monitor and speakers on one socket.) This not only eliminates the problem that the mouse light does not go off after shutdown, but also saves the power consumption of the display and the motherboard during standby (although the power consumption is small, but it is also a good thing to save), it can be said to kill two birds with one stone. This article comes from [System Home] www.xp85.com