Editing Macintosh 512Ke

{{Infobox computer
| name         = Macintosh 512Ke
| image        = [[File:Macintosh512Ke.jpg|250px]]
| manufacturer = Apple Computer, Inc.
| type         = Personal Computer
| release_date = April 14, 1986
| discontinued = September 1, 1987
| price        = US$1,999
| cpu          = Motorola 68000 @ 7.83 MHz
| memory       = 512 KB RAM (built‑in)
| storage      = 800 KB 3.5″ floppy drive
| display      = 9″ monochrome CRT (512×342)
| sound        = Monaural, 8‑bit
| dimensions   = 13.6″ H × 9.6″ W × 10.9″ D
| weight       = 16.5 lbs (7.5 kg)
| os           = System 1.0 – System 6.0.8
| predecessor  = [[Macintosh 512K]]
| successor    = [[Macintosh SE]]
| codename     = M0001E
| model        = M0001E
}}

The '''Macintosh 512Ke''' (often called the 512K “enhanced”) was introduced by Apple on April 14, 1986, as a cost‑effective alternative to the Macintosh Plus. It combined the 512 KB RAM and compact case of the [[Macintosh 512K]] with the 800 KB floppy drive and 128 KB ROM of the Macintosh Plus, unlocking support for newer System software and utilities.

== Features ==
* '''800 KB Floppy Drive''' – Double‑sided drive offering twice the native disk capacity of earlier models.  
* '''128 KB ROM from Mac Plus''' – Built‑in SCSI Manager support (no physical SCSI port), enabling compatibility with SCSI‑based hard drives via third‑party adapters.  
* '''Educational Edition''' – Late‑life rebadged as the “Macintosh ED” for schools, with identical hardware but educational packaging.  
* '''Limited Expansion''' – No internal slots; RAM upgrades and SCSI adapters were supplied by third parties, often boosting memory to 2 MB+.

== System Software ==
Shipped with System 3.2; later officially supported up to System 6.0.8. In practice, many users ran System 5.x for a balance of features and available memory.

== Upgrade Paths ==
Official Apple upgrade kit (US $299) for the 512Ke included:
# 800 KB floppy drive  
# 128 KB ROM chips  
# Macintosh Plus System Tools disk and installation guide  

Third‑party kits offered SCSI port cards and RAM expansions (up to 2 MB or more), addressing the machine’s expansion limitations.

== Maintenance ==
The 512Ke shares its PCB layout and servicing procedures with the [[Macintosh 128K]] and [[Macintosh 512K]]. For cleaning, capacitor replacement guides, and general servicing, see [[Macintosh 128K/512K General Maintenance]].

[[Category:Apple Vintage Computers]]
{{Navbox-AppleVintageComputers|state=collapsed}}