"2U RACKMOUNT CHASSIS SUPPORTS ATX/MICRO ATX MOTHERBOARDS; LED INDICATORS AND AUDIBLE ALARM NOTIFICATION FOR SYSTEM FAULT DETECTION; SHOCK-RESISTENT DRIVE BAYS TO HOLD ONE 5.25"" AND THREE 3.5"" DRIVES; VARIOUS RISER CARD OPTIONS TO SUPPORT THREE FULL-SIZE PCI OR PCIE CARDS FOR EXPANSION; INCLUDES 300 W ATX PFC POWER SUPPLY; REUSABLE AND WASHABLE AIR FILTERS"