Technical Information: General Brand IN-WIN Model IW-Z638T.CQ350TBL Specifications Case size Mini Tower Chassis M/B Form Factor Micro-ATX Drive Bays External 5.25" x 2, 3.5" x 2 Internal 3.5" x 1 Power Supply 350W I/O Expansion Slots PCI/AGP expansion slot x 4 Dimension(H x W x D) 363 x 180 x 370 mm 14.3" x 7.1" x 14.6" Front Ports Standard USB2.0 x2 , HD/AC"97 Audio Optional IEEE 1394(FireWire) Excellent Thermal Solution 9cm rear fan PCI Vent Hole Intel Certificated TAC 2.0 Easy Installation and Maintenance Screwless Front Panel Screwless Side Panels Screwless 5.25" Drive Bays Screwless 3.5" Drive Bays 4 Screwless PCI/AGP Expansion Slots Security Standard Padlock loop for padlock Kensington Security Slot Supported Optional chassis intrusion switch