The greenMachine is ideally suited for standalone “desktop” applications. However, rack mounting preferred in some situations. For larger permanent system installations where multiple greenMachines are used, rack mounting is essential. The RFR 6000 is a compact 19” rack mounting solution occupying 1RU of vertical rack space. It has can be configured to accommodate one or two greenMachines. In either configuration the RFR 6000 also provides innovative mounting options for one or two of the external RPS 6120 “brick” power supplies both of which can be securely mounted within the 19” 1RU footprint. The RPB 6000 power bridge cable is also included. This cable provides power redundancy when the frame is configured for two greenMachines using dual power supplies. Simply cross connect the power connections of both greenMachines with the power bridge cable and each greenMachine shares the two power supplies for primary and redundant power protection.