Here is the offical thread from the 8gb of ram upgrade on a mark 2. He used the low density. Think most toughbook ram is low density double row.http://forum.notebookreview.com/threads ... ry.752813/
Discussion about ram before it was installedhttp://forum.notebookreview.com/threads ... k2.751942/
As of yesterday, that PC is still working, for the current owner.
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