Apple twentieth anniversary mac Servicehandbuch
Specifications
I/O Interfaces - 5
I/O Interfaces
SCSI
One external SCSI port; supports up to six external devices
Serial
Two RS-232/RS-422 GeoPort-compatible serial ports; mini
DIN-9 connectors
Apple Desktop Bus
One Apple Desktop Bus (ADB) port; mini-Din-4 connector
Maximum power draw 500 mA; maximum of three devices
total; additional ADB port on back of keyboard
TV/Radio
One TV tuner card that provides connection to an external TV
antenna or cable TV (F-type connector) and FM radio antenna.
(The Apple TV/FM Radio System card is already installed.)