Case Size Mid Tower Chassis Color Black and Silver External Drive Bays 3 x 5.25inch 2 x 3.5inch Internal Drive Bay 2 x 3.5inch 1 x 2.5inch Front Ports 2 x USB 2.0 HD Audio MB Form Factor ATX / Micro ATX I/O Expansion Slot PCI Express Expansion Slot x 7 Power Supply ATX 12V Form Factor PSII Size Thermal Solution Intel Certified TAC 2.0 Supports 90 or 120mm Front Fan Supports 90 or 120mm Rear Fan Safety Meets RoHS, CE and FCC Class B Requirements Security Padlock Loop Kensington Slot Optional Internal HDD Cage for Extra 3.5" x 2 or 3.5" x 1 + 2.5" x 1 90 or 120mm Front Fan 90 or 120mm Rear Fan IEEE 1394 Side Panel Clip Screwless Drive Bays Screwless I/O Slot Chassis Intrusion Switch USB 3.0 x 2 3.5 to 2.5 HDD/SSD Bracket Item Dimension (L"xW"xH") 16.3 x 7.5 x 17.5