ASUS Rampage IV Formula LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 ATX Intel Motherboard 4 x PCIe3.0 x16 (red) slots, support x16; x16/x16; x16/x8/x16 and x16/x8/x8/x8 configurations AMD 4-Way CrossFireX and NVIDIA 4-Way SLI support 4 x SATA 6Gb/s port(s) 6 x USB 3.0 port(s) (4 at back panel, 2 at mid-board ) 2 x Power eSATA 6Gb/s port(s) 1 x Gigabit LAN featuring Intel Chipset SupremeFX III, built-in 8-Channel High Definition Audio CODEC 12 x USB 2.0 port(s) (6 ports at back panel, 1 for ROG Connect; 6 ports at mid-board)