The 4U Industrial Rackmount Computer Case provides your server a sturdy structure, reliability and performance. The 4U form factor chassis accepts 7 full-height expansion cards and 12" x 9.6" ATX / Micro ATX motherboards. With 1 external 3.5" bay, 7 internal 3.5" bays, and 3 external 5.25" bays (1 internal 3.5 and external 3.5 Share), a total storage capacity up to 7 hard drives gives you more options of RAID configuration. Power and reset switches are in the front for easy access with a lockable cover to protect it from accidental touch . Also, the front panel has LED indicators for power and HDD, plus 2 USB ports and audio jacks for quick connection to external devices.