Apple macintosh plus 服务手册
Specifications
I/O Interfaces - 5
I/O Interfaces
Floppy Drive
External drive port; DB-19 connector
SCSI
One SCSI parallel port; DB-25 connector
Mouse
Mouse port; DE-9 connector
Keyboard
Synchronous serial keyboard bus; RJ-11 connector
Serial
Two RS-422 serial ports; mini DIN-8 connectors