# Macintosh RS-422

It's possible to connect RS-232 peipheral to the RS-422 port availble on Macintosh computers. Use RXD- as RXD, TXD- as TXD, Ground RXD+, Leave TXD+ unconnected, GPi as CD.

(At the computer)

8 PIN MINI-DIN FEMALE at the computer.

Pin | Name | Dir | Description
--- | --- | --- | ---
1 | HSKo |  | Output Handshake
2 | HSKi/CLK |  | Input Handshake or External Clock
3 | TXD- |  | Transmit Data (-)
4 | GND |  | Ground
5 | RXD- |  | Receive Data (-)
6 | TXD+ |  | Transmit Data (+)
7 | GPi |  | General Purpose Input
8 | RXD+ |  | Receive Data (+)