GPU not detected on first PCIe Slot

What Does PCIe x16 Mean? pcie slot configuration gen1 gen2 gen3 PCIe Status First slots shipped in Q4 CY2007 Adoption is slower than Gen1 Page 21 PCI Express and Storage © 2008 Storage Networking pcie 20 x16 slot The IO configuration of the UP Element i12 EDGE is tailored 3052 PCIe B-key x 1 2280 SATAPCIe x2 M-key x 1

pcie x32 slot PCI Express Gen1, Gen2, and Gen3 Protocol to Physical Layer Analysis for P67SA16S