Motorola 660AV - Manual (Page 10)

Specifications I/O Interfaces - 6
I/O Interfaces
Expansion Slot
Internal expansion slot supports either NuBus, processor-direct
slot (PDS) card, or digital audio/video expansion (DAVE) card
(with appropriate adapter)
SCSI One SCSI port; DB-25 connector
Supports a maximum of six external devices (internal SCSI
devices include the computer, which is always device 7)
Apple Desktop Bus
Two Apple Desktop Bus (ADB) ports for keyboard, mouse, and
low-speed input devices; mini DIN-4 connectors
Expansion Slot
Internal expansion slot supports either a processor-direct slot
card or 7-inch NuBus card (with appropriate adapter)