Size: 548mm(W)*430mm(D)*177mm(H)，Material: 1mm high grade steel，Color choice: black, gray or white，Drive frame: 3 CD drive,1 FDD,7HDD，Cooling design: With two 8cm*8cm fans，Option fixing: a 12cm*12cm fan or two 8cm*8cm fans in the front panel，PCI extended slot: 7 PCS，Filter: removable or upturned，Control panel: power and reset system，Direction lamp: 6 PCS hard disk lamp，With usb2.0, audio in/out port，Mainboard size: 12拻*9.6拻，Loudspeaker: input (0.4W) ，Temperature: 0℃~50℃，Relative humidity: 5%~95%