668W Platinum Level High Efficiency Power Supply 5x SAS3 3. 5" HDD Bays 3x 5. 25" Peripheral Drive Bays 1x Slim DVD-ROM Drive Bay 5. 7x Full-height, Full-length Tool-less Expansion Slots Dual channel Air Duct design 2x Front USB 3. 0 Ports & 1x Com port Optional Front Bezel with Removable Air Filter Power Switch, Reset Switch & 6x LED Indicators