HP 0231A40B - X120 622M SFP LC LX 15km transceiver - Small Form-factor Pluggable (SFP) 622.08Mbps transceiver with 1310nm laser that provides a full-duplex solution up to 15km (9.32 miles) on 9/125 single-mode fiber - Has one LC duplex connector Retail
HP 0231A40C - X120 transceiver - Single Mode (SM), 622M, 80km (49.7ml) range, Lucent Connector (LC), Small Form Pluggable (SFP) Retail
HP 0231A40D - X120 622M SFP LC LH 40km transceiver - Small Form-factor Pluggable (SFP) 622.08Mbps transceiver with 1310nm laser that provides a full-duplex solution up to 40km (24.9 miles) on 9/125 single-mode fiber - Has one LC duplex connector Retail
