Physical Features 15Table 6 SFP Mode SFP/Duplex Status LEDsThe SFP module will only disable the 1000BASE-Tinterface once there is a valid link on the module.(7) Power LEDThe Power LED shows the power status of the Switch.Table 7 Power Status LED(8) Self-adhesive PadsThe unit is supplied with four self-adhesive rubber pads.Do not apply the pads if you intend to rack mount theunit.If the unit is to be part of a free-standing stack, applythe pads to each marked corner area on the undersideof the unit. Place the unit on top of the lower unit,ensuring that the pads locate within the recesses of thelower unit.Rear PanelThe rear panel of the Switch contains the power supplysocket.(9) Power SocketThe Switch automatically adjusts to the supply voltage.Only use the power cord that is supplied with the unit.SFP/Duplex MeaningGreen The SFP module is inserted, regardless ofthe link status.Off The SFP module is not inserted.Status MeaningGreen The unit is powered on and ready for use.Yellow Internal power, POST, or loopback test hasfailed. Switch is in fail-safe mode.Flashing The Switch is undergoing the power upsequence, or a software upgrade is underway.Off The unit is not receiving power.■ Check that the power cord is connectedcorrectly.■ If the unit still does not operate, contact yoursupplier.