slot z97 ✓ ASUS Z97-A last PCIE x16 slot not working?

slot z97
On my EVGA Z97 FTW board, the slot is labeled 2232, which means its keyed for 32mm long cards I have verified the length with a ruler, it is 32mm slot z97 The motherboard has three x16 PCIe slots The top one is currently occupied by R9-290 and the last, bottom most PCIe x16 slot was supposed to hold my ASUS

slot z97Z97 Express Chipset Memory 4 x DDR3 DIMM sockets supporting up to 32 GB of slot, running at x16 * For optimum performance, if only one

slot z97 North Bridge Intel Haswell rev 06 South Bridge Intel Z97 rev 00 Slot #1 Module Kingston 8192 MB