The Original 80s Macintosh Plus 1Mb M0001A Computer is a rare vintage piece from Apple, featuring a unique Dove Enhanced Upgrade. This home computer, made in the United States, is a true collector's item for those interested in vintage computing. The Macintosh Plus, with its 1Mb of memory, offers a glimpse into the early days of personal computing and is sure to appeal to fans of classic Apple products. COMES AS SHOWN IS SUPER CLEAN CONDITION NO YELLOWING CAMES WITH ALL MANUALS, WIRES AND BOOKS SHOWN!Macintosh Plus 1 MB with Dove “Enhanced” Expansion
The “Macintosh Plus 1 MB Dove Enhanced” refers to a 1986 Apple Macintosh Plus (model M0001A) with 1 MB RAM, upgraded via a Dove Computer Corporation “MacSnap” expansion card to provide contiguous memory and optional performance/network enhancements
Base system — Macintosh Plus (M0001A)
Release: January 16, 1986
CPU:Motorola 68000 @ 7.8 MHz
RAM: 1 MB standard, expandable to 4 MB via 150 ns 30‑pin SIMMs
Display: 9″ monochrome, 512×342, 72 ppi
Storage: 800 KB floppy, external SCSI port
Notable features: First Mac with SCSI, user‑upgradeable SIMM slots, RJ‑11 keyboard port, DE‑9 mouse port
Dove “Enhanced” — MacSnap expansion
Dove Computer Corporation produced MacSnap boards for the Macintosh family. For the Macintosh Plus, the relevant product was:
MacSnap Plus 2 – expands the Macintosh Plus to 2 MB of contiguous RAM (non‑expandable).
Other MacSnap models (e.g., MacSnap One Meg SIMMS) could add 1 MB or more of contiguous memory, and some included optional SCSI or networking features.
The “Enhanced” label in listings often means the system has been upgraded with one of these cards, which:
Consolidates memory into a single contiguous block (important for certain software)
May add SCSI support or other peripherals
Can be installed without physical modification to the case
Why it matters
The Macintosh Plus already shipped with 1 MB RAM, but the Dove “Enhanced” version typically means more than the stock 1 MB — either 2 MB via MacSnap Plus 2, or 1 MB contiguous via a MacSnap One Meg SIMMS card — plus possible performance or I/O upgrades. This was a common way to extend the life and capability of classic Macs into the early 1990s.
