Maxtop 4U ICX-4830B-20 Rackmount Chassis with Audio Port and USB 4U chassis support for max motherboard size 12" x 10" Drive Bays: 3 x 5.25" open, 1 x 3.5" open, 7 x 3.5" HDD internal bay Cooling System: 2 x 120mm front fans + 2 x 80mm top fans Easy-installed internal 6-bay HDD cage Dimensions: 19" x 7" x 19" (WxHxD)