ModelX299 UD4 Pro. CPU Socket Type LGA 2066. M.21 x M.2 connector (Socket 3, M key, type 2242/2260/2280 SATA and PCIe x4/x2 SSD support) (M2Q_32G). 1 x M.2 connector (Socket 3, M key, type 2260/2280/22110 SATA and PCIe x4/x2 SSD support) (M2P_32G).
eBay