Shop wholesale QSFP+ Duplex 40G optical transceivers with duplex LC interface, covering LR4, ER4, ZR4, EZR4, CWDM4 series. Support single‑mode fiber with transmission reach from 2km up to 100km. Comply with QSFP+ MSA standard, DOM/DDM digital diagnostics supported, hot‑pluggable and multi‑vendor compatible. Ideal for legacy data center upgrading, enterprise campus interconnection and metro telecom aggregation networks.