OfficeServ 7200 Installation Manual© SAMSUNG Electronics Co., Ltd. 3-5Figure 3.2 Back Panel ConfigurationFunctions of the back panel parts of the cabinet are as follows:Table 3.6 Back Panel PartsParts DescriptionGround Lug Lug for grounding system communication.External rectifier socket Supplies an external power to Power over Ethernet (PoE).Power switch Switches the power of OfficeServ 7200 on/off.Power connector between abasic cabinet and an extensioncabinetSupplies the power supplied to the basic cabinet anextension cabinet.Power I/O connector Connects the power cables composed of three inlets/outlets.AC LED Is lit for the AC input power.DC LED Is lit for the DC output power.Backup socket Connects an external battery.