AMD X399 chip. AMD X399 chip 4 x PCIe 3.0 x16 (x16, x16/x16, x16/x8/x16, x16/x8/x16/x8) 1. 1 x PCIe 2.0 x4 expansion card slot. 2 x M.2 Socket 3 slots supporting M key, 2242/2260/2280/22110 type storage devices (PCIE 3.0 x 4 mode) 2.
eBay