Pinout

UART 1 Port

Pin	Signal	Voltage
1(red)	VCC	Power 5V
2	RX1 (in)	TTL 3.3V
3	TX1 (out)	TTL 3.3V
4	SCL1	TTL3.3V
5	SDA1	TTL3.3V
6	NC
7	NC
8	NC
9	NC
10	GND	GND

CAN 1 Port (CAN Version)

Pin	Signal	Voltage
1(red)	VCC	Power 5V
2	CAN1-H	TTL 3.3V
3	CAN1-L	TTL 3.3V
4	GND	GND

CAN 2 Port (CAN Version)

Pin	Signal	Voltage
1(red)	VCC	Power 5V
2	CAN2-H	TTL 3.3V
3	CAN2-L	TTL 3.3V
4	GND	GND

UART 2 Port

Pin	Signal	Voltage
1(red)	VCC	Power 5V
2	RX2 (in)	TTL 3.3V
3	TX2 (out)	TTL 3.3V
4	EXTINT	TTL3.3V
5	PPS	3.3V
6	GND	GND