Dell Q28-100G-ER4-lite Compatible 100G QSFP28 ER4 Lite 1310nm (LAN WDM) 40km with FEC, 30km without FEC LC SMF DDM Transceiver Module
Dell Q28-100G-ER4-lite Compatible 100G-ER4 Transceiver Module supports 40km over single-mode fiber and uses a wave length of 1310nm via Duplex LC connector.
