Onyx Boox 60 serial port pinout

Serial port signals are connected to small connector near battery (can be accessed after removing back cover).

WARNING!!! All serial port signals are 0-3.3V. You need voltage level converter for connecting it to PC.

Pinout (first pin is marked with small triangle):

1. GND
2. RX
3. ?
4. ?
5. TX
6. +3.3V