Cisco DWDM-SFP10G-31.89 Compatible 10G DWDM SFP+ C57 100GHz 1531.89nm 40km LC SMF DDM Transceiver Module
Cisco DWDM-SFP10G-31.89 Compatible 10G DWDM SFP+ 1531.89nm transceiver supports up to 40km link lengths over single-mode fiber via an LC duplex connector.