Compaq Portable III

The Compaq Portable III is a PC/AT-compatible computer released by Compaq Computer Corporation in 1987.[1] It was advertised as being much smaller and lighter than the previous portable x86-PCs, however it was still quite large by today's standards. Three models were announced at release. The Model 1 had a list price of 3999 USD and was equipped with a 12 MHz Intel 80286, 640 KB RAM, 1.2 MB 5.25" floppy, and a 10" amber colored gas-plasma display.[3] Other options included the Model 20 at 4999 USD which added a 20 MB hard disk,[4] or 5799 USD for the Model 40 with the upgraded 40 MB hard disk.[1] There was also an optional ISA Expansion chassis allowed for 2 full length 16-bit ISA add-in cards[1] for 199 USD.[4] Power is supplied using a mains electricity outlet, no battery exists.[1]

Compaq Portable III

Manufacturer	Compaq Computer Corporation, United States
Type	Portable computer
Release date	1987 (1987)
Operating system	MS-DOS 3.1
CPU	Intel 80286 @ 12 MHz, Intel 80287 (FPU) option
Memory	640 - 8192 kB RAM[1]
Display	10" amber colored gas-plasma display
Graphics	640 × 400 resolution, 80 × 25 text
Sound	PIT using a mini speaker
Connectivity	CGA,[2] serial, parallel[1]
Dimensions	41 (width) x 19.2 (depth) x 24.8 (height) cm
Mass	9.1 kg
Predecessor	Compaq Portable II
Successor	Compaq Portable 386