Other Network Hardware & PartsChina Cisco Glc-Lh-Sm-20 Compatible 1000base-Lx/Lh SFP 1490nm/1550nm 80km Dom Transceiver Module, Find details about China Simplex, SFP Module from Cisco Glc-Lh-Sm-20 Compatible 1000base-Lx/Lh SFP 1490nm/1550nm 80km Dom Transceiver Module