the A4000 originally come inside the whiten desktop pack using a separate keyboard.
There was likewise a tower version known as the A4000T, produced inside microscopic amounts.

Features of the desktop version: 2x front accessible Trine½ inch cause bays. 1x front accessible Fivesome¼ inch cause bay. 1x high density Tercet½ inch floppy disk drive. 2x internal Three½ inch cause mountings. AGA chipset. IDE disk interface.

Interestingly, unlike virtually all more Amigas, early A4000 machines experienced the CPU mounted within the daughterboard applying a favorite CPU slot. A mainboard got there is no CPU in the least. Late machines got a CPU surface mounted on the mainboard in an effort to reduce costs.

A tower version was a merely Amiga ever to use each SCSI and IDE interfaces built-in on the motherboard. With driver package for two interfaces on the ROM meant that some other area of AmigaOS had to be moved from either a ROM, & so a A4000T is a lone machine to keep close at hand the file "workbench.library" stored in disk. It was likewise the just Amiga to apply a PC form factor for the motherboard, & the number one (& single) to utilize a Lithium Ion backup battery instead of a NiCd. This backup battery is likewise one of the usual is the causal agent of of problems in the senescent A4000s: it has a tendency to finally leak. A discharged juice come somewhat caustic & might one of these days damage a motherboard.

This was a final "big-box" machine to exist as put retired by Commodore International. Just two or three century 4000T's were produced prior to a whole company folded. Production of the 4000T's was restarted when ESCOM bought a Amiga plus. A ESCOM-made 4000T's experienced minor differences by having the old 1, including a substitution of the high density floppy cause sustaining a double density a single..

A A4000 designatiin was as well utilized on an Acorn Archimedes model.

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