Provide better stability and compatibility Support for serial port debugging Supports Win7/8/8.1/10/11, , Linux, Android and other systems Easily see the working status, providing convenience for your programming and debugging UART pin of for 40PIN can be connected through loose wire Chip solution:FT232RNL Host interface:USB Communication speed:300bps-3Mbps Device interface:UART USB interface: Interface form: USB-A type Interface protection: Self recovery fuse, ESD static protection UART interface: Interface form: 4PIN line loose SH1.0 3PIN anti fooling serial port interface protection: IO protection diode circuit Indicator light: PWR: Power indicator light, connected to USB, lights up when voltage is detected TXD: Send indicator light, lights up when data is sent from USB port RXD: Receive indicator light, lights up when data is sent back from device interface Cable specification: PVC outer cover, wire length 1m Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:pvc Package Contents: 1 * Debugging line Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.