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Compaq Portable III

Model 2660 · 1987–1989 · laptop

Specifications

Cpu: Intel 80286, 12 MHz, optional 80287 math coprocessor (8 MHz)
Ram: max: 8 MB via external expansion unit ISA cards · base: 640 KB
Ports: Serial · Parallel · CGA-compatible video out · 96-pin expansion port for external ISA expansion unit
Battery: none (AC only)
Display: 10" amber gas-plasma display, lifts and swivels, 640x400 native (CGA-compatible at 640x200)
Storage: base: Single 1.2 MB 5.25" floppy drive (Model 1) · options: 20 MB internal hard drive (Model 20) · 40 MB internal hard drive (Model 40)
Weight: 9.1 kg
Os Support: latest: MS-DOS 6.22 (unofficial, community-supported) · shipped: MS-DOS 3.1
Release Price: $3,999 (Model 1) to $5,799 (Model 40)

Variants

Storage

Model 11987, floppy only, no hard drive

Model 201987, adds 20 MB internal hard drive

Model 401987, adds 40 MB internal hard drive

Upgrade paths

RAM

Up to 8 MB via Compaq's external expansion unit, which added ISA slots for period memory cards · No internal expansion slots on the main chassis itself, unlike the earlier Portable II; the 96-pin port to the external unit was the only path to more RAM.

varies

HARD

storage

20 MB or 40 MB internal hard drive (factory option) · Hard drive was fitted at the factory per model number; retrofitting one into a diskless Model 1 meant sourcing a period drive and Compaq's mounting hardware.

HARD

display

Fixed 10" gas-plasma panel, no upgrade path · The swiveling gas-plasma display was the Portable III's signature feature and not swappable for a different panel type.

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