IEI Integration IMBA-9454 v1.00 - Manual (Page 70)

IMBA-9454 Motherboard
Page 52
4.2.14 PCI Express x16 Slot
CN Label: PCIE2
CN Type: 82-pin PCIe x16 slot
CN Location: See Figure 4-15
CN Pinouts:
See Table 4-16 (Side A) Table 4-17 (Side B)
PCIe x16 expansion devices can be inserted into the PCIe x16 slot.