Load the new BIOS file. Click "Erase IC," then "Write IC," then "Verify." Wait 2-5 minutes.
Locate the 8-pin BIOS chip on the motherboard. Note the model number (e.g., Winbond 25Q64FVSIG). usb drive ch341 3 1
Align the colored wire (usually Pin 1 indicator on the clip) with the dot on the BIOS chip. Gently clamp. Connect the clip’s ribbon cable to the CH341’s 8-pin header (ensure pin 1 matches). Load the new BIOS file
Set your multimeter to DC volts. Probe between VCC and GND on the clip. Must read 3.3V. Probe MOSI and GND – should also be 3.3V. If 5V, do not proceed. Note the model number (e
But what exactly is it? Is it a standard USB flash drive for storing photos and documents? Despite the misleading term "drive," the CH341 3.1 is not a storage device. It is a multi-purpose USB interface adapter built around the WCH (Nanjing Qinheng Microelectronics) CH341A or CH341B chip.