Hitachi CP-S845W Operating Manual page 24

Connection to the control signal terminal (continued)
PS/2 mouse
ADB (Mac) mouse
Serial mouse
Communication via RS-232C cannot be operated with Serial mouse cable.
Caution
Purchase RS-232C cable.
24
Projector Computer
PS/2 cable
Projector Computer
ADB cable (Option)
Projector Computer
Serial cable (Option)
Mini Din 6pin
Mini Din 4pin
D-sub 9pin