Apantac ROSS OGX-FR-CNS Design openGear Frame with Cooling and Advanced Networking and SNMP Frame for openGear Cards. Modular Rear (I/O Modules not included). Can mix and match any signal types with appropriate Rear Modules. 20 openGear card slots, 1 controller slot, and 1 reference slot. Includes advanced network controller with SNMP, reference card, cooling system and one PS-OGX 600 watt power supply; redundant supply available.