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Posted

So I added a 10Gbps NIC to my Prodesk and was puzzled to see that the memory was now only 8GB.  Welp after reseating and fiddling I discovered that the 2nd dimm slot wouldn't work with the nic installed. 

 

Welp Co-pilot answered, the chipset in the PC can't allow the x16 pcie slot AND the 2nd dimm slot at the same time!  The BIOS disables the 2nd dimm slot when the x16 slot is in use!

 

The PCIE x16 can't be restricted to x8 or x4 as the bios doesn't exposed this. (to make both work with bifurcation.) 

Posted (edited)

The ProDesk 400s tend to be cut down in more ways than one as they're designed to be a budget option for those who can't afford or don't need the ProDesk 600, or the EliteDesk 800 PCs.

 

I've got a ProDesk 400 G2.5 sat next to me and it won't support more than 16GB of RAM or CPUs more than 65W TDP.

Edited by MrEprise

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