2 x PCIe 5.0 x16 (support x16 or x8 / x8 mode) 2 x PCIe 3.0 x16 (supports x4 mode) 1 x PCIe 3.0 x1

Asus PRO WS W680-ACE, Workstation, Intel W680, 1700, ATX, 4 DDR5, 2x 2.5G LAN, SlimSAS, PCIe5, 3x M.2