Serial Port Module

USB to TTL Serial Port Module

Product Parameters

Brand: Firefly

Size: 25mm*15.5mm

Technical Information

Driver Download:

http://www.prolific.com.tw/US/ShowProduct.aspx?pcid=41

Physical Image


Connection Method

USB to Serial Adapter, with four pins:

3.3V Power (NC), no need to connect

GND, ground line for the serial port, connect to the GND pin of the
development board

TXD, output line for the serial port, connect to the TX pin of the
development board

RXD, input line for the serial port, connect to the RX pin of the
development board

Note:

 If using another serial adapter and encountering issues with TX and
RX not being able to input and output, try swapping the connections of
TX and RX.

AIO-1688JD4 DEBUG Port: