Technical Specifications: Motorola MC68000 at 7.16MHz 512Kb ChipRAM ICS Chipset OS 1.2 / 1.3 880Kb floppy disk Interface for memory expansion and 3.5" or 5.25" floppy or harddisk 4 channel stereo sound Serial, Parallel, RGB, Mouse and Joystick ports.

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The original Amiga A2000 was not really an official machine as far as Commodore Business Machines in the USA was concerned. This is why, in some countries, the A2000 released by CBM in the USA (i.e. the official product) is often referred to as the B2000 instead. Basically Commodore's German subsidiary became disgruntled at the USA's lack of progress with the Amiga and decided to release an upgraded version of the A1000 in Germany which they called the A2000.

It shared much of the A1000 design, integrating several parts of the motherboard design, and the example Zorro II backplane from "Schematics and Expansion Specifications", the A1000 hardware manual. It used the thin Agnus, which handled only 512K of DRAM. They added a "Genlock" slot, which was essentially just the 23-bit video signal on an internal connector, and the "MMU" slot, which was essentially just the A1000 external edge connector on an internal slot. The machine shipped with 512K of Fast RAM in this slot and could only be booted from floppy disk rather than internal ROM.