The A4000, or Commodore Amiga 4000, was the successor of the A2000 and A3000 computers. The machine came in two models, the A4000/030 and the A4000/040, with a Motorola 68EC030 or Motorola 68040 CPU, respectively. The A4000/040 was first out, released in October 1992. The A4000/030 was released in April 1993. Commodore is the commonly used name for Commodore International, a West Chester, Pennsylvania based electronics company who was a major player in the 1980s home computer field. ... In computing, Amiga is a range of home/personal computers primarily using the Motorola 68000 processor family, whose development started in 1982, initially as a game machine. ... The A2000, also known as the Commodore Amiga 2000, is the high-end Amiga personal computer that was released in 1987 at the same time as the low-end high-volume model A500. ... The A3000, also known as the Commodore Amiga 3000, was a much more serious proposition to build a professional multimedia computer than the previous A2000 effort. ... The 68EC030 is a microprocessor from Motorola. ... The Motorola 68040 is a microprocessor from Motorola. ... This article needs to be cleaned up to conform to a higher standard of quality. ... October is the tenth month of the year in the Gregorian Calendar and one of seven Gregorian months with the length of 31 days. ... 1992 is a leap year starting on Wednesday of the Gregorian calendar. ... April is the fourth month of the year in the Gregorian Calendar and one of four with the length of 30 days. ... 1993 is a common year starting on Friday of the Gregorian calendar and marked the Beginning of the International Decade to Combat Racism and Racial Discrimination (1993-2003). ...

The A4000 originally came in a white desktop box with a separate keyboard.
There was also a tower version called the A4000T, produced in small numbers.

Features of the desktop version:

• 2x front accessible 3½ inch drive bays.
• 1x front accessible 5¼ inch drive bay.
• 1x high density 3½ inch floppy disk drive.
• 2x internal 3½ inch drive mountings.
• AGA chipset.
• IDE disk interface.

Interestingly, unlike most other Amigas, early A4000 machines had the CPU mounted in a daughterboard using a special CPU slot. The mainboard had no CPU at all. Later machines had the CPU surface mounted on the mainboard in an effort to reduce costs. A floppy disk is a data storage device that is composed of a circular piece of thin, flexible (i. ... Advanced Graphics Architecture (AGA) was the name used for the improved graphic chipset of the third generation Amiga Computers at the beginning of the 1990s. ... ATA cables: 40 wire ribbon cable top, 80 wire ribbon cable bottom Advanced Technology Attachment (ATA) is a standard interface for connecting storage devices such as hard disks and CD-ROM drives inside personal computers. ... Surface-mount components on a keydrives circuit board Surface mount technology (SMT) is a method for constructing electronic circuits in which the components are mounted directly onto the surface of printed circuit boards (PCBs). ...

The tower version was the only Amiga ever to have both SCSI and IDE interfaces built-in on the motherboard. Having driver software for both interfaces on the ROM meant that some other parts of AmigaOS had to be moved from the ROM, and thus the A4000T is the only machine to have the file "workbench.library" stored on disk. It was also the only Amiga to use a PC form factor for the motherboard, and the first (and only) to use a Lithium Ion backup battery instead of a NiCd. This backup battery is also one of the most common causes of problems in the aging A4000s: it has a tendency to eventually leak. The released fluids are somewhat corrosive and can eventually damage the motherboard. SCSI stands for Small Computer System Interface, and is a standard interface and command set for transferring data between devices on a computer bus. ... Rom is also the name of a toy and comic book character Rom (Spaceknight). ... AmigaOS is the default native operating system of the Amiga and AmigaOne personal computers. ... Lithium ion batteries (sometimes abbreviated Li-Ion) are a type of rechargeable battery commonly used in consumer electronics. ...

This was the final "big-box" machine to be put out by Commodore International. Only a couple hundred 4000T's were produced before the whole company folded. Production of the 4000T's was restarted after ESCOM bought the Amiga assets. The ESCOM-manufactured 4000T's had minor differences with the old one, including the substitution of the high density floppy drive with a double density one.. Commodore is the commonly used name for Commodore International, a West Chester, Pennsylvania based electronics company who was a major player in the 1980s home computer field. ...

The A4000 designation was also used on an Acorn Archimedes model. The Acorn Archimedes was Acorn Computers Ltds first general purpose home computer based on their own ARM RISC CPU, and spawned a family of very capable machines with various options. ...