18 CHAPTER 1: INTRODUCING THE S WITCH 4500 F AMILYSwitch 4500 — RearView DetailFigure 5 Switch 4500 — rear viewFigure 6 Switch 4500 PWR - rear viewOff No link is present.Duplex (3CR17571-91 and 3CR17572-91 only)Green Full duplex, blinking off for every packet received ortransmitted.Yellow Half duplex, blinking off for every packet received ortransmitted.Yellow flashing The port has failed POST.Off No link is present.PoE (3CR17571-91 and 3CR171572 only)Green Power is being delivered to the port.Green flashing Port power has exceeded limit or is unable to supply powerdue to unit being over budget.Yellow PoE error, no power supplied on port.Yellow flashing The port has failed post.Off No power is being delivered.1000BASE-X SFP Port LEDsSpeed Green A high speed (1000 Mbps) link is present.Yellow Flashing Port failed POST.Off No link is present.Duplex (3CR17571-91 and 3CR17572-91 only)Green Full duplex packets are being transmitted/received on theport.Yellow Half duplex packets are being transmitted/received on theport.Yellow flashing Port failed POST.Off No link is present.Table 4-1LED Color IndicatesPower Socket100-240V; 50/60Hz; 1AOpen Book Warning LabelsEarthing Screw~Power SocketRedundant Power System Socket100-240V; 50/60Hz; 7.0AOpen Book Warning LabelsNULLEarthing Screw~-53 -55V;19.5A
