ASUS PRIME TRX40-PRO AMD TRX40 ATX motherboard(ASUS PRIME TRX40-PRO) - AMD Socket sTRX4 for 3rd Gen AMD Ryzen™ Threadripper™ Series Desktop Processors, Memory: 8x DDR4 256GB (MAX), Expansion Slots: 3 x PCIe 4.0 x16 (x16/x16/x16), 1 x PCIe 4.0 (x4), Storage: 8x SATA 6Gb/s(RAID 0,1,10); 3x M.2 Socket 3; 6 x USB 3.2 Gen 1; 4 x USB 3.2 Gen 2 ( 1 x Type-C), Operating System: Windows® 10 64-bit, Form Factor: 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm ), Multi VGA :Quad SLI/CrossfireX