Editing IBM Personal Computer AT (section)

{{Short description|IBM personal computer released in 1984}}
{{Use mdy dates|date=May 2024|cs1-dates=y}}
{{Infobox information appliance
| name = IBM PC/AT (System Unit 5170)
| title = 
| aka = IBM AT, PC/AT
| logo = IBM Personal Computer AT badge recreation.svg
| logo_upright = 0.5
| image = File:IBM PC AT.jpg
| caption = 
| developer = 
| manufacturer = IBM
| family = 
| type = [[Personal Computer]]
| generation = 
| releasedate = {{Start date and age|1984|08|14}}<ref>{{cite magazine |last1=Somerson |first1=Paul |title=AT the Party |magazine=PC Magazine |date=November 13, 1984 |page=123 |url=https://books.google.com/books?id=-Ukz6hjZEA4C&pg=PA117 |access-date=July 5, 2014|ref=PC Magazine, November 13, 1984, Page 123}}</ref>
| lifespan = 
| price = Approx. {{US$|6000|1983|round=-2}}
| discontinued = April 2, 1987<ref name="vintage">{{Cite web |url=http://www.vintage-computer.com/ibmpcat.shtml |title=IBM PC AT at Vintage Computer |access-date=October 20, 2010  |archive-date=August 22, 2020  |archive-url=https://web.archive.org/web/20200822055008/http://www.vintage-computer.com/ibmpcat.shtml |url-status=dead }}</ref>
| unitssold = >100,000
| unitsshipped = 
| media = 
| os = {{ubl|[[IBM PC DOS]] 3.0+|OS/2 1.x|[[Interactive Systems Corporation#PC.2FIX|PC/IX]] 1.1|IBM & SCO [[Xenix]]|[[Windows]] 1.0–3.1}}
| power = 120/240 VAC
| soc = 
| cpu = [[Intel 80286]] @ 6 and 8&nbsp;MHz
| memory = 256–512&nbsp;[[Kilobyte|KB]] onboard + 3.5&nbsp;[[Megabyte|MB]] with additional memory cards
| storage = 20&nbsp;MB hard drive<br/>1.2&nbsp;MB HD 5.25" (135&nbsp;mm) floppy drive
| memory card = 
| display = 
| graphics = [[Color Graphics Adapter|CGA]], [[Enhanced Graphics Adapter|EGA]]
| sound = 
| input = Parallel, serial
| controllers = 
| camera = 
| touchpad = 
| connectivity = 
| platform = 
| service = 
| dimensions = 
| weight = 
| topgame = 
| compatibility = 
| predecessor = [[IBM Personal Computer XT]]
| successor = [[IBM Personal System/2]]
| related = [[List of IBM Personal Computer models]]
}}

The '''IBM Personal Computer AT''' (model 5170, abbreviated as '''IBM AT''' or '''PC/AT''') was released in 1984 as the fourth model in the [[IBM Personal Computer]] line, following the [[IBM Personal Computer/XT|IBM PC/XT]] and its [[IBM Portable Personal Computer|IBM Portable PC]] variant. It was designed around the [[Intel 80286]] [[microprocessor]].