3U Standard Chassis 14 x 3.5" HDD (Optional 9 x 3.5" HDD + 3 x 5.25" Bays) ATX PSU.The SC-39650G-ATX is a cost-effective and industrial grade high quality rackmount chassis. It supports 14 x 3.5" drive bays and accepts EEB (12"x13"), CEB(12"x10.5"), ATX (12"x9.6"), Micro ATX (9.6" x 9.6"), Mini ITX (6.7" x 6.7") motherboards. RoHS Compliant. It is perfect for A/V system, DVR, Home Theater server and corporate serverFeatures: 3U rackmount design,meets EIARS-310C standard. 14 x 3.5" drive bays (The 4 centre drive bays can also accept 2.5" HDD / SSD's) Can be modified to have a variety of hot swap drive bays, internal 3.5" HDD and 5.25" optical bays using SC-H300 and SC-H500 Caddy's Alterntively can have 3 x 5.25" and 9 x 3.5" HDD internal bays Supports EEB (12"x13"), CEB(12"x10.5"), ATX (12"x9.6"), Micro ATX (12"x9.6"), ATX (9.6" x 9.6"), Mini ITX (6.7" x 6.7") motherboards. 5 full height PCI slots 2 x 60mm rear exhaust fans, 4 x 80mm hot swap fans in centre fan wall plus 2 x 120mm front fans. Two front accessible USB ports RoHS CompliantSpecifications:Drive Bay: Supports fourteen 3.5" drives (The 4 centre drive bays can also accept 2.5" HDD / SSD's)Alternative 1 - Can be modified to have 10 x 3.5" Hot Swap, and 4 x 3.5" internal using the SC-H500 CaddyAlternative 2 - Can be modified to have 8 x 3.5" Hot Swap, 1 x 5.25" and 4 x 3.5" internal HDD using 1 x SC-H300 and 1 x SC-H500 CaddyAlternative 3 - Can be modified to have 9 x internal 3.5" HDD and 3 x 5.25" Optical drive bays.Convert any of the 3.5" HDD drive bays to accept 2 x 2.5" HDD / SSD by using an SC-02A drive converter.Add 2 extra 2.5" HDD/SSD internal drives using internal drive carrier SC-BKT-006Cooling Fan: 2 x 60mm rear exhaust fans, 4 x 80mm hot swap fans in centre fan wall plus 2 x 120mm front fans.Switch: Power ON/OFF x 1, System reset x 1Indicator:Power ON/OFF x 1, HDD x 1, NETWORK X 2Connector:Two front accessible USB portsMotherboard Compatibility: Supports EEB (12"x13"), CEB(12"x10.5"), ATX (12"x9.6"), Micro ATX (9.6" x 9.6"), Mini ITX (6.7" x 6.7")Power Supply Options: Standard ATX (rear mounted) must have 80mm fans.PCI Expansion: 5 x full height PCI expansion slotsDimensions ( W x D x H ): 19" x 25.6" x 5.1" (483mm x 650mm x 133mm)Packing:Double boxes, 830mm x 555mm x 195mm (33" x 22" x 8")Weight: 11.60 kg/23 lb (NET) 13.50 kg/ 27.3 lb (GROSS)Environment Temperature:0/55 °C, 32/131 °F (Operating) -20/60 °C, -4/140 °F (Non-Operating)Relative Humidity: 5% to 95%,non-condensingVibration ( 5-500 Hz ):1 Grms (Operating), 2 G (Non-Operating)Shock : 10 G(with 11ms duration, half sine wave) (Operating), 30 G (Non-Operating)