With 2 processor configuration, you will need this riser: 7KMJ7 Riser 1- X16 Slot (used in Slice 2P config).   Regards,
Hi all:    I has been upgrade my dell r420 from 1 processer to 2 processer ( e5-2420) and i move the memory dimm from a1,a2,a3,a5 bank to  a1,a3 and b1,b3 bank and after hardware upgrade, then boot machine   the frontpanel show  HWC2005: System board Riser cable or interconnect failure. Check connection anyone can help me ?
R420 HWC2005: System board Riser cable or interconnect failure. Check connection