Macintosh RS-422 - Serial port connector - Geoport pinout. Macintosh RS-422 - Serial port connector

Macintosh RS-422 - Serial port connector - Geoport

pin	name	direction	description	color
1	HSKo	OUT	Output Handshake
2	HSKi/CLK	IN	Input Handshake or External Clock
3	TXD-	Out	Transmit Data (-)
4	GND		Ground
5	RXD-	IN	Receive Data (-)
6	TXD+	Out	Transmit Data (+)
7	GPi	IN	General Purpose Input
8	RXD+	IN	Receive Data (+)