... link, active, speed LED, built-in BYPASS function LEDExternal I/O USB Two USB2.0 COM One ... No.DescriptionsIEC-516P-010EIEC-516P system,D525 CPU,6 LAN ports,2 channels BYPASS,100W power supplyIEC ... power supplyIEC-516P-010SEIEC-516P system,D425 CPU,6 LAN ports,2 channels BYPASS,100W power supplyIEC ... -516P-020SEIEC-516P system,D425 CPU,6 LAN ports,100W power supplyIEC-516P-030SEIEC-516P ...