Cozlink 40G QSFP+ ER4 Transceiver is low voltage hot-swappable optical transceiver that supports data transmission over single mode fiber equipped with CWDM system.The Cozlink 40G QSFP+ ER4 Transceiver is compliant with SFF-8436 specifications for LC duplex transceivers. Key features of 40G QSFP+ ER4 Transceiver are push-pull tab for easy replacement,4 channel 1310 nm CWDM lasers conjugated to single mode fiber. In-built DDM check supports assess and control on optical power receive/transmit, temperature, laser bias current for better adjustment to wavering conditions. 40G QSFP+ ER4 Transceiver from Cozlink is cost-effective, power-efficient optical transceivers designed to fully leverage the high speed 40 Gigabit Ethernet switches and routers. These are preferred for achieving flexibility and scalability while extending the data center networks to grant better internet experience. Cozlink also provides 40G QSFP+ ER4 Transceiver compatible switches, routers, pigtails, chords & cables and other optical fiber networking solutions.