Aicsys inc manufactured 4u ruggedized rackmount chassis of rck-416m/b to be a military/industrial grade server chassis. The rck-416m/b supports atx motherboard or 14-slot backplane, and could be equip with ps2 or mini redundant power supply. Aicsys designed rck-416m for atx motherboard model and rck-416b for 14-slot backplane model. The black exterior material constructed with 1.6mm secc heavy duty steel radiates a solid feel for a short depth compact 4u rackmount of 381mm/15 which provides the purpose of space saving and cost effective as a high-end server chassis. The rck-416m/b offers a shock absorbing of (2) 5.25 drive bays and (3) 3.5 drive bay, suitable to contain large amount of data. For front panel it comes with (2) usb 2.0 ports with a (1) 120mm ball-bearing fan and replaceable air filter for cooling solution. And a lockable front door for security feature. It is easily configurable to support either an atx motherboard or a 14-slot backplane by simply changing the rear panel. Also, a power and alarm reset switch and a led indicator for on/off status for ps2 or mini-redundant power supply to ensure a minimum amount of system down time. Aicsys inc is an established manufacturer of high reliability ipc hardware solutions to many of the major tier-1's companies and provides oem/odm services for ipc system automation. Aicsys inc., provides high quality products a wide range of applications for low to high volume with a reasonable price to be cost effective. Aicsys inc. Offers experienced technician and resources to guarantee the achievement of customer projects for more business opportunities. Product features: -secc 1.6mm heavy-duty steel -supports atx motherboard or 14-slot backplane -lockable front door -(2) 5.25" external drive bay (1) 3.5" external drive bay (2) 3.5" internal drive bays -(2) front usb 2.0 ports -(1) 120mm ball-bearing fan with replaceable air filter -supports ps2 or mini redundant psu