Editing IBM Trackball Keyboards

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{{infobox dkeyboard
| image name   = 
| name         = IBM Model M5-1<br>IBM Model M5-2
| family       = [[IBM Model M]]
| pn           = 
| fcc          =
| branding     = Lexmark, IBM
| manufacturer = 
| switch       = [[IBM buckling spring#Membrane|Buckling spring over membrane]]
| layouts      = 
| interface    = [[PS/2 interface|PS/2]] × 2, DIN 5 and Serial
| weight       = 
| introduced   = 
| price        = 
| precedes     = [[Unicomp On-The-Ball]]
}}

'''IBM Trackball Keyboards''' are [[IBM Model M]] keyboards with integrated [[trackball]]s.

==Models==
===M5-1===
The Model M5-1 placed the trackball and four buttons between the [[cursor keys]] and the upper navigation block.

===M5-2===
The Model M5-2 placed the trackball and eight buttons (four top, four rear) at the top-right of the keyboard, above the LED panel.

==Gallery==
===M5-1===
<gallery widths="250" heights="187" caption="Lexmark M5-1 (1370478)">
File:IBM Model M5-1.jpg|Model M5-1
File:IBM Model M5-1 ball.jpg|Trackball
File:IBM Model M5-1 label.jpg|Label
</gallery>

===M5-2===
<gallery widths="250" heights="187" caption="Lexmark M5-2 (92G7455)">
File:IBM Model M5-2.jpg|Model M5-2
File:IBM Model M5-2 ball.jpg|Trackball
File:IBM Model M5-2 label.jpg|Label
</gallery>

[[Category:List of all IBM keyboards]]
[[Category:IBM Model M keyboards]]
[[Category:Lexmark OEM keyboards]]
[[Category:Keyboards with buckling springs]]
[[Category:Vintage keyboards]]
[[Category:List of all keyboards]]