View source for IBM 1-8MB 286 Memory Expansion Adapter (MCA)

{{WikipediaInfoAlt|Device}}
{{DeviceAlerts}}
{{InfoboxDevice
|Title = IBM 1-8MB 286 Memory Expansion Adapter (MCA)
|Picture = 
|Release Year = 1987
|Mounting Technology = Through Hole
|Capacitor Types = Tantalum
|Leak Risk = Low
|Batteries = None
|Destructive Entry = No
}}
This MCA memory expansion card allows for up to 8MB of RAM to be installed in PS/2 Models 50, 50Z and 60. It supports extended memory and LIM EMS 3.2.

==Known Issues==

===RAM installed on the card is not detected on POST===
====Causes====
*Unknown
====Solutions====
*Unknown 

==Original Parts==
===P/N: 61X6752===
''P/N 61X6740 is printed on the board. Label on ROM chip U14 is dated 1986 and bears the P/N 11F8060.''
{| class="wikitable sortable"
|+Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information
!RefDes
!Qty
!Capacitance
!Voltage
![https://caps.wiki/wiki/Part_Footprints Mount]
!Diameter/Size
!Height
!Lead Spacing
!Temp
![https://caps.wiki/wiki/Capacitor_Types Type]
!Brand
!Series
|-
|
|12
|0 µF
|
|
|
|
|
|0 °C
|Tantalum
|
|Markings: "104 C5K", "911 RAJ" 
|-
|
|18
|
|
|
|
|
|
|
|Tantalum
|
|Markings: "104 C5K", "907 RFS"
|-
|
|2
|
|
|
|
|
|
|
|Tantalum
|
|Markings: "10-6", "2" (circled)
|}
The capacitor series are unknown. Markings are provided for later identification.

==Replacement Parts==
===Basic PCB Name===
{| class="wikitable sortable"
|+Capacitors
!RefDes
!Qty
!Compatible Part Number
!Order Links
|-
|
|
|
|[https://www.digikey.com/ Digikey]
|}
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''

===Kits===
*Digikey BOM: https://www.digikey.com/

==Related Links==

*[https://www.ardent-tool.com/memory/IBM_Memory_Expansion.html IBM Memory Expansion Adapters on Ardent Tool of Capitalism]

==References==
<references />

[[Category:WorkNeeded:General]]
[[Category:WorkNeeded:OriginalParts]]
[[Category:WorkNeeded:ReplacementParts]]
[[Category:Micro Channel Architecture (MCA)]]