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((Short description|Personal computer by Apple, Inc.))
((More citations needed|date=April 2023))
((Use mdy dates|date=October 2013))
((Infobox information appliance
| name = Macintosh 512Ke
| aka = M0001E
| image = Macintosh 512k enhanced.jpg
| caption = 
| developer = 
| manufacturer = [[Apple Inc.|Apple Computer, Inc.]]
| family = [[Compact Macintosh]]
| type = 
| releasedate = ((Start date and age|1986|04|14))
| price = ((USD|2000|1986|round=-2))
| discontinued = ((End date|1987|09|01))
| unitssold = 
| unitsshipped = 
| os = [[System 1|1.0]], [[System 1.1|1.1]], [[Classic Mac OS|2.0]], [[Classic Mac OS|2.1]], ''[[Classic Mac OS|3.0]]'', [[Classic Mac OS|3.2]], [[Classic Mac OS|3.3]], [[Classic Mac OS|3.4]], '''[[Classic Mac OS|4.0]]''', '''[[Classic Mac OS|4.1]]''',<ref>[http://support.apple.com/kb/TA41109 System Software: Configs for Mac 128K, XL, 512, & 512KE (7/94)]</ref> [[Classic Mac OS#System Software 5|4.2]], [[Classic Mac OS#System Software 5|4.3]], [[System 6|6.0-6.0.8]]
| cpu = [[Motorola 68000]] @ 8 MHz
| memory = 512 [[Kilobyte|KB]] RAM (built-in)
| display = 
| graphics = 
| sound = 
| input = 
| dimensions = 
| weight = 
| predecessor = [[Macintosh 512K]]
| successor = [[Macintosh SE]]<br>[[Macintosh Plus]]
))
The '''Macintosh 512K''' '''''enhanced''''' ('''512Ke''') was introduced in April 1986 as a cheaper alternative to the top-of-the-line [[Macintosh Plus]], which had debuted three months previously.<ref>((cite web| url=http://docs.info.apple.com/article.html?artnum=1970 |title=Macintosh 512Ke: Specifications (Discontinued) (8/94) |archive-url=https://web.archive.org/web/20110516051336/http://docs.info.apple.com/article.html?artnum=1970 |archive-date=16 May 2011 ))</ref>  It is the same as the [[Macintosh 512K]] but with the [[Macintosh External Disk Drive#800K|800K disk drive]] and 128K of [[Old World ROM|ROM]] used in the Macintosh Plus. Like its predecessors, it has little room for expansion. Some companies did create memory upgrades that brought the machine up to 2 MB or more.

==Model differences==
Originally, the case was identical to its predecessor,  except for the model number listed on the  rear bucket's agency approval label. It used the same beige-like color as well. Later in its lifespan, the 512Ke was discounted and offered to the educational market, badged as the ''Macintosh ED'' (M0001D & later M0001ED).((Citation needed|date=October 2013))

The 512Ke shipped with the original short [[Apple Keyboard#Macintosh Keyboard (M0110)|Macintosh Keyboard]], but the extended [[Apple Keyboard#Macintosh Plus Keyboard (M0110A)|Macintosh Plus Keyboard]] with built-in numeric keypad could be purchased optionally.<ref>((Cite web |url=http://www.mac512.com/macwebpages/plusupkit.htm |title=Macintosh Plus Upgrade Kits<!-- Bot generated title --> |access-date=January 28, 2008 |archive-url=https://web.archive.org/web/20130914163329/http://www.mac512.com/macwebpages/plusupkit.htm |archive-date=September 14, 2013 |url-status=dead ))</ref> A version of the 512Ke only sold outside of North America included the full keyboard and was marketed as the ''Macintosh 512K/800''.<ref>((cite web |url=http://web.mac.com/pjlarge/iWeb/PJLarge/The%20Computer%20Museum.html |title=The Computer Museum| archive-url=https://web.archive.org/web/20080515225553/http://web.mac.com/pjlarge/iWeb/PJLarge/The%20Computer%20Museum.html |archive-date=May 15, 2008 ))</ref> Later, the larger keyboard would be included as standard in North America as well.

Although the 512Ke includes the same 128K ROMs and 800K disk drive as the Mac Plus, the 512Ke retains the same port connectors as the original Mac.  For this reason, 512Ke users' only hard disk option is the slower, floppy-port-based [[Hard Disk 20]], or similar products for the serial port, even though the 512Ke ROMs contain the "SCSI Manager" software that enables the use of faster [[SCSI]] hard disks (because the ROMs are the same as the ones used in the Mac Plus, which does have a SCSI port).  Apple did point users to certain third-party products which could be added to the 512Ke to provide a SCSI port.<ref>[http://support.apple.com/kb/TA37193 Macintosh 512K: Adding a SCSI Port<!-- Bot generated title -->]</ref>

==Official upgrades==
A [[Macintosh 512K]] could be upgraded to a 512Ke by purchasing and installing Apple's $299 ''[[Macintosh Plus]] Disk Drive Kit''. This included the following:
* 800 KB double-sided floppy disk drive to replace the original 400 KB single-sided drive
* 128 KB ROM chips to replace original 64 KB ROM
* Macintosh Plus System Tools disk with updated system software
* Installation guide
One further upgrade [[Original equipment manufacturer|made by Apple]] replaced the [[Motherboard|logic board]] and the rear case (to accommodate the different port configuration) with those of the [[Macintosh Plus]], providing built-in [[SCSI]] functionality and up to 4 MB [[Random-access memory|RAM]]. Because Apple's official upgrades were costly, many third-party manufacturers offered add-on SCSI cards, as well as RAM upgrades, to achieve the same functionality. The new ROM allowed the computer to run much newer system and application software; though it loaded more data into RAM, it only slightly decreased the amount of available memory – by 1.5 [[kilobytes|KB]] – leaving well over 370 KB available for applications.<ref>[http://support.apple.com/kb/TA35585 Macintosh 512K ROM Upgrade: Memory Available]</ref><ref>((cite web |url=http://docs.info.apple.com/article.html?artnum=10198  |title=Macintosh Plus: Description (Discontinued) |archive-url=https://web.archive.org/web/20110613170354/http://docs.info.apple.com/article.html?artnum=10198 |archive-date=13 June 2011 )) The Macintosh Plus Logic Board Kit</ref>

==System software==
After June 1986, the 512Ke shipped with System 3.2. After it was discontinued, Apple changed the recommended OS for the 512Ke to System 4.1.  System 6.0.8 is the maximum OS for the 512Ke.<ref>[http://support.apple.com/kb/SP188 Macintosh 512Ke: Technical Specifications]</ref>

== Timeline ==
((Timeline of compact Macintosh models))

==See also==
* [[Macintosh 128K/512K technical details]]

==References==
((Reflist))

==External links==
((commons category|Macintosh 512K))
*[https://web.archive.org/web/20130116061350/http://www.hardwaresecrets.com/article/Inside-the-Macintosh-512K/1694 Inside the Macintosh 512K]

((Apple hardware before 1998))

[[Category:Compact Macintosh|512ke]]
[[Category:68k Macintosh computers|512ke]]
[[Category:Computer-related introductions in 1986]]
[[Category:Products and services discontinued in 1987]]

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