QSFP and CFP optical modules

QSFP and CFP are high-speed optical transceivers used for 100G and higher network connections, with QSFP offering smaller size and lower power consumption, while CFP provides robust long-distance performance. OverviewCFP (C Form-factor Pluggable) is a larger optical module designed for high-speed 100G Ethernet and telecom applications. It converts electrical signals from networking equipment into optical signals for long-distance, high-bandwidth communication, supporting both 10x10G and 4x25G optical lanes.

CF

P modules are widely used in service provider transport, enterprise core aggregation, and data center interconnects, particularly where long-reach connectivity is required.

QSF

P (Quad Small Form-factor Pluggable) is a smaller, high-density module designed for data center and enterprise networks. QSFP28, for example, supports 100G connections using 4x25G lanes or can be broken out into 4x25G connections via DAC or fiber cables.

QSF

P modules are hot-swappable, support high port density, and consume less power (typically under 3. 5W) compared to CFP modules, which can consume 6–24W. Key DifferencesFeatureCFPQSFP28Form FactorLarger, robustCompact, high-densityElectrical Lanes10x10G4x25GOptical Lanes10x10G or 4x25G4x25GPower Consumption6–24W