CHENBRO RM42300 Black 4U Rackmount Case, No PSU, 2x USB 2.0, External 3x 5.25',Internal 4x 3.5', 1x Slim ODD Slot, 1x 120mm Fan

4U 17.5' Compact Industrial Server Chassis With entire isolated anti-vibration cage, dust-proof filter, and compact size make it perfect for space-sensitive industrial applications. Features & Benefits -Supports M/B up to 12' x 9.6' -Available for rackmount and stand-alone installation -Dedicated 80 mm fan for HDD cooling -Truly isolated anti-vibration design on internal HDD and drive cages -Card retainer to hold low profile and full height add-on cards -Front 120mm fan with filter for add-on card cooling Specification MB Form Factor ATX (12' x 9.6') Dimension (D x W x H) 465.2 x 430.0 x 176.0 (mm) Drive Bay External 3.5'：1 External 5.25'：3 Internal 3.5'：4 Slim ODD：1 PSU Form Factor PS/2 single Indicator 1 x Power Status 2 x LAN Activity 1 x HDD Status Front Control 1 x Power On/Off 1 x System Reset 2 x USB2.0/USB3.0 (Option) Cooling Fan Front: 1 x 120 mm (T=25 mm), PWM, Rear: 2 x 80 mm (T=25 mm) (Option) System Security Intrusion Switch (Option) Key Lock on Front Door Expansion Slot Opening 7 x Full Height Net Weight 9.5 kg/20.93 lb Gross Weight 12.3 kg/27.09 lb