Check whether the DIN-Rail mounting kit thatcomes with the device is installed firmly.Insert the bottom of DIN-Rail mounting kit (one sidewith spring support) into DIN-Rail, and then insertthe top into DIN-Rail.Tips:Insert a little to the bottom, lift upward and then insertto the top.Check and confirm the product is firmly installed onDIN-Rail, and then mounting ends.【Disassembling DIN-Rail】Power off the device.After lift the device upward slightly, first shift out thetop of DIN-Rail mounting kit, and then shift out thebottom of DIN-Rail, disassembling ends.Attention before powering on: Power ON operation: first connect power line to theconnection terminal of device power supply, and thenpower on. Power OFF operation: first unpin the power plug, andthen remove the power line, please note the operationorder above.【Power Supply Connection】 48VDC Power SupplyThe top panel of this switch provides 4-pin DC power supplyinput terminal blocks, and supports redundant power supplyinput function. It provides two pairsof power supply input terminals,PWR1 and PWR2, which could beused individually or connected totwo independent DC power supplysystems. It uses two pairs ofterminal blocks to connect to the device at the same time.When any one of the power supply systems fails, the devicecould operate normally without interruption, which hasimproved the reliability of network operation. Voltage input is48VDC (the definitions of terminal are V1-, V1+, V2-, and V2+).The power supply supports anti-reverse connection. 24VDC Power SupplyThe top panel of this switchprovides 4-pin DC power supplyinput terminal blocks, and supportsredundant power supply inputfunction. It provides two pairs ofpower supply input terminals,PWR1 and PWR2, which could be used individually orconnected to two independent DC power supply systems. Ituses two pairs of terminal blocks to connect to the device atthe same time. When any one of the power supply systemsfails, the device could operate normally without interruption,which has improved the reliability of network operation.Voltage input is 24VDC (the definitions of terminal are V1-,V1+, V2-, and V2+). The power supply supports anti-reverseconnection.【Relay Connection】The access terminal of this relay is locatedon the top panel of the device. Relayterminal blocks are a pair of normally opencontacts in the alarm relay of the device.They are open circuit in the status of normalno alarm, and closed when any warning message occurs. Theproduct supports 1 relay warning message output, andwarning messages output of the DC power supply or networkabnormal alarm output. It can be connected to alarm indicator,alarm buzzer, or other switching value collecting devices fortimely warning operating staffs when the warning messageoccurs.【DIP Switch Settings】The products provide 4 pins DIP switch forfunction settings, where "ON" is the enable validterminal.DIP switches definitions as follows: Model IDIP Definition Operation1 Flow control Set the DIP switch to ON2 RJ45 specified 10M Set the DIP switch to ON3 Port alarm Set the DIP switch to ON4 100M/Gigabitswitching of fiberportSet the DIP switch to ON(ON is 100M) Model IIDIP Definition Operation1 Flow control Set the DIP switch to ON2 Port alarm Set the DIP switch to ON3 RJ45 specified 10M Set the DIP switch to ON4 VLAN (G2 cancommunicate withother ports, but otherports cannotcommunicate witheach other)Set the DIP switch to ON【Checking LED Indicator】The function of each LED is described in the table as below:LED Status DescriptionPWR1ON PWR1 is connected and runningnormallyOFF PWR1 is disconnected andrunning abnormally.PWR2 ON PWR2 is connected and runningnormallyOFF PWR2 is disconnected and