X171 1Gb SFP LH40 CWDM transceiver - Small Form-factor Pluggable (SFP) Gigabit transceiver with 1570nm laser that provides a full-duplex Gigabit solution up to 40km (24.9 miles) on single-mode fiber - Has one LC 1000BASE-LH port
HPE Networking SFP and Mini-GBIC LH40 Transceivers