Despite the misleading "USB Drive" moniker, this is a storage device. It is a multi-functional USB-to-serial interface tool based on the WCH (Nanjing Qinheng Microelectronics) CH341 chip. The "3 1" in the keyword typically signifies its triple-threat capability: EEPROM programming, serial communication (UART), and I2C/SPI emulation.
Always verify voltage with a multimeter before connecting a target chip. For 1.8V chips (common in newer laptops), you cannot use a stock CH341 at all without a dedicated 1.8V adapter board. usb drive ch341 3 1
: Dual-voltage output ( 3.3V and 5V ) for different target systems. Despite the misleading "USB Drive" moniker, this is