19" - 5U Industrial Rack - Mount Server Chassis Features: 5U EIA RS310C Rack-Mount chassis specification & meets for FCC / CE requirements. Rugged construction and design for harsh industrial environment. Support ATX/Baby AT motherboard and MP-P54R with 20 slots & MP-P58X with 7-14 slots passive back plane . Hold-Down clamp design to protect plug-in cards from vibration . Shock resistant drive bracket exposed:   MP-P54R: (4x) open 5.25" , (1x) open 3.5 drive bay .   MP-P58X: (8x) open 5.25" , (1x) open 3.5 drive bay . 3x12cm ball bearing Fans with removable air filter to have better ventilation and easy replacing . AT/ATX/hot-swappable Redundant industrial grade power supply w/safety-approved . A lockable front door for dust-proof integrity and running security. Excellent mechanical designed for best shock-proof , dust-proof , water-proof and air-tight . The front door with hinge design for smooth opening & security . Clear activity LED indicator on the front side. Model No. MP-P54R MP-P58X MP-P58A Drive Space 5.25" Half-height 4 8 8 3.5" Open 1 1 1 3.5" H.D.D. (Hidden) 1 1 1 Cooling Fan 12 cm Fan 3 3 2 Rear Panel * Slot 20 7/8/12/14 7/8/12/14 DB-9 2 1/0/0/0 1/0/0/0 DB-25 2 2/2/1/0 2/2/1/0 Power Supply (optional) PS/II AT Redundant 300W PS-II 300W , 400W or N+1 Redundant 300W Safety   UL , CSA , TUV Dimension (W. x D. x H.) mm 482.6x670.0x221.3 482.6x520.0x221.3 Inch 19.0x26.37x8.72 19.0x20.47x8.72 Packing 1pce/1CTN N.W. 17.3 Kgs 17.8 Kgs 16.1 Kgs G.W. 21.7 Kgs 22.2 Kgs 19.5 Kgs MEAS. 6.15 cuft 6.15 cuft 6.15 cuft *optional back panles are available on request.