... with LAN link, active, speed LED, built-in BYPASS function LEDExternal I/OUSBTwo USB2.0COMOne RJ-45 COMIndicatorOne ... 516P system,D525 CPU,6 LAN ports,1 channels BYPASS,100W power supplyIEC-516P-010SEIEC-516P system,D425 ... CPU,6 LAN ports,2 channels BYPASS,100W power supplyIEC-516P-020SEIEC-516P system,D425 ... Platform IEC-516P(Intel Atom D525,CHI8M chip set,6LAN,2USB,1COM,Bypass)