Xigmatek Elysium Server Version Computer Case CCC-HSA0DS-U03 (Black) Support HPTX super big M/B and 10 PCI slots for four graphic cards. Hot-swappable 2.5/3.5" SATA HDD docking on top panel. Two USB3.0 super-speed ports on top panel with dust-proof cover. Dual PSU possible on the top and bottom. 360/420mm water cooling radiator possible. Fully external twelve 5.25?? bays with two ??4 in 3 HDD cage??. Aluminum on the front mesh panel with removable dust filters. Anti-vibration rubbers and bottom dust filter for PSU.