IEI Integration IMBA-Q670 v1.02 - Manual (Page 47)

IMBA-Q670 ATX Motherboard
Page 31
3.2.15 PCIe x4 Slot (with PCIe x1 Signal)
CN Label: PCIEX4_1
CN Type: PCIe x4 slot
CN Location: See Figure 3-18
The PCIe x4 slot provide PCIe x1 signal for PCIe expansion cards.
Figure 3-16: PCIe x4 Slot Location (with PCIe x1 Signal)
3.2.16 PCI Express x16 Slot
CN Label: PCIEX16_1
CN Type: PCIe x16 slot
CN Location: See Figure 3-17
The PCIe x16 expansion cards slot is for PCIe x16 expansion cards.