... S10/S100 SM1310nm to SM 1550nm ,Dual Fiber,LC Connector,AC or DC Power, 10+100KM SPC410GB-S100/ ... S100 SM1550nm to SM 1550nm ,Dual Fiber,LC Connector,AC or DC Power, 100+100KMSPC410GB-M/SF20A ... MM850nm to Single Fiber TX-1310nm,LC Connector,AC or DC Power, 20KMSPC410GB-M/SF20B, MM850nm ... to Single Fiber TX-1550nm,LC Connector,AC or DC Power, 20KM 155M/622M/1.25G /2.5G transceiver