Asus KFSN4-DRE/SAS - Manual (Page 38)

2-18 Chapter 2: Hardware information
2.5.4 PCI Express x16 slot (x8 link or x16 link)
This motherboard supports PCI Express x16 cards that comply with the PCI
Express specifications. The diagram shows the location of the PCI Express x16
slot.
The number of PCIE slot differs by model. The KFSN4-DRE/SAS comes with
one PCIE x 16 slot (x 8link); the KFSN4-DRE/2S comes with two PCIE x 16 slot (x
8link); the KFSN4-DRE comes with one PCIE x 16 slot (x 16link).
2.5.5 BMC socket
The BMC socket socket on the motherboard supports an ASUS ® Server
Management Board 3 Series (ASMB3).
®
KFSN4-DRE Series BMC SOCKET
®
KFSN4-DRE Series PCI Express slot