ASUS ROG STRIX TRX40-E GAMING AMD TRX40 ATX motherboard (ASUS ROG STRIX TRX40-E GAMING) - Build in AMD Socket sTRX4 for 3rd Gen AMD Ryzen Threadripper Series Desktop Processors, Memory: 8x Dual Channel DDR4 DIMM Slot, Max. 256GB, DDR4 4666MHz, Expansion Slots: 3 x PCIe 4.0 x16, 1 x PCIe 4.0 x 1, Storage: 2 x M.2 (PCIE 4.0 x4 and SATA modes), 8 x SATA 6Gb/s(Raid 0, 1, 10). 9 x USB3.2 Gen 2, 4 x USB3.2 Gen 1(4@frt), 8 x USB2.0 , Operating System: Windows 10 64-bit, Form Factor: 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )