Characteristics: 4U high rackmount chassis supports up to 14 boards shock-type drive bay design can be mounted to three 5.25 "and two 3.5" disk drives (a built-in, one front) comes with a special rubber mat fastening clip can better prevent the board in the harsh environment from accidental shock visualization power status and hard disk status display pre-filter device can better improve the effectiveness of the system user-friendly interface, easy system maintenance lockable cockpit door to prevent unauthorized use of 300W / 400W AC and 300W DC ATX power supply optional