Apple quadra 900.950.ws 95 Servicehandbuch
Specifications
I/O Interfaces - 6
I/O Interfaces
SCSI
One external SCSI port; DB-25 connector
Quadra 900
One internal SCSI port with 50-pin IDC connector; Supports a
maximum of eight devices (including the computer, which is
always device 7)
AWS 95 and Quadra
900/950 (with PDS
card upgrade)
900/950 (with PDS
card upgrade)
Two internal SCSI ports with 50-pin IDC connectors; Two
external SCSI ports with DB-25 connectors; Supports a
theoretical limit of 20 devices (including the computer, which
is always device 7) on four separate SCSI buses (two internal
and two external); Macintosh Operating System supports only
7 devices
Apple Desktop Bus
One Apple Desktop Bus (ADB) port; low-speed, synchronous
serial interface