✓ VERIFIED

Leading Edge Model D

1985 · desktop

Specifications

Cpu: Intel 8088, 4.77 MHz (some later units switchable to 7.16 MHz)
Ram: max: 640 KB (user-upgradeable on lower-capacity units) · base: 256 KB
Ports: Serial · Parallel · 8087 math coprocessor socket · 5x expansion slots
Display: Sold with a bundled monochrome monitor at launch; CGA-compatible color option available
Storage: base: Dual 360 KB 5.25" floppy drives · options: Single 360 KB floppy plus a 10, 20 or 30 MB fixed disk
Os Support: latest: MS-DOS · shipped: MS-DOS
Release Price: $1,495

RAM

640 KB · Lower-capacity 256 KB and 512 KB units were user-upgradeable to the 640 KB ceiling via onboard sockets.

EASY

CPU

Intel 8087 math coprocessor addition · Dedicated socket on the motherboard, documented across all Model D configurations.

EASY