RM41300 4U High Performance Industrial Server Chassis Equipped with truly isolated anti-vibration drive cages, dust-proof filter, and reliable add-on card holder make it ideal for high performance IPC. Features: Supports 8-slot rear window for 4 GPU cards (RM41300-FS81) Truly isolated anti-vibration design on internal HDD cage and drive cage Optional second 3 x 5.25” drive cage for maximum configuration flexibility Dedicated 80 mm fan for HDD cooling PCI-e card retainer to hold low profile and full height add-in cards (RM41300) Supports stand-alone installation via optional kit (RM41300) Supports 1-door or 2-door front bezel configuration (RM41300) Specifications: Form Factor 4U MB E-ATX (12”x13”) Dimensions (D x W x H) 546 x 430 x 176 (mm)21.5” x 16.9” x 6.9” Drive Bay External 5.25"：3 External 3.5"：1 Internal 3.5"：4 Slim ODD：1 Power Supply PS/2 Single or Mini-redundant Indicator 1 x Power Status1 x HDD Activity2 x LAN Activity Front Control 1 x Power On/Off1 x Alarm Mute1 x System Reset2 x USB2.0/ USB3.0 (Option) System Security Intrusion Switch, Key Lock on Front Door Cooling Fan Front: 1 x 120mm (T=25mm), PWM Rear: 2 x 80mm (Option) Expansion Slot 15 x Full Height and Full Length Storage Backplane N/A Net Weight 12.5kg Gross Weight 15.5kg Front Bezel Option Cubic Feet 4.03 Container Loading (Single Packing) 20’: 245, 40’: 524, 40’H: 592