Amiga A4000 - Drive Expansion; Lnch Devices

3-4 Drive Expansion
The video slot connector has been extended compared with previous
Amiga models to make graphics signals produced by the AA custom
chip set available. Most boards produced for the earlier video slot
are still electrically compatible with the newer slot. The rear
bracket of video boards produced for earlier Amigas, however, may
require some modification to fit the A4000 chassis.
Drive Expansion
The Amiga has ample space and mounting hardware for internal
drive expansion, allowing both 3.5-inch and 5.25-inch devices.
3.S-lnch Devices
The A4000 can accommodate up to four 3.5-inch devices internally.
The two front bays (one already filled by the internal floppy drive)
have external access; the two in the rear position are suitable for
hard drives that do not require external access.
Note
In order for two devices to be installed in either the
front or the rear 3.5-inch bays, both devices in either
area must be low profile units (1 inchl25 mm in
height). If a half-height (1.25 inchl32 mm) device is
installed in either area, another device cannot be
installed in that area.
The A4000 contains a built-in Intelligent Drive Electronics (lDE)
hard disk controller, to which one or two devices may be connected
internally via the ribbon cable included. You can use one of the
Amiga expansion slots to add a SCSI adapter, which could then
control additional internal and external storage equipment, such as
CD-ROM drives, tape drives, scanners, and so on.
You
can install a second floppy drive (DF1:) in the bottom front 3.5-
inch bay, provided that the DFO: floppy drive is a low profile unit.
Additional floppy drives (DF2: and DF3:) may be connected
externally using the floppy drive connector on the rear of the main
unit.