Many people understand SFP (Small Form factor Pluggable) as an upgraded version of GBIC. The volume of the SFP Optical module is at least half that of the GBIC Optical module, and more than twice the number of ports can be configured on the same panel. Due to the basic consistency between SFP modules and GBIC in terms of functionality, it is also referred to as Mini-GBIC by some switch manufacturers

SFP-155M (transceiver mode: single fiber bidirectional/dual fiber bidirectional/dual transmission dual reception/single transmission single reception; wavelength: 850nm/1310nm/155nm/CWDM/DMDM optional; transmission distance: 0-160KM optional; working temperature: commercial grade 0 ℃~+70 ℃/industrial grade -40 ℃~+85 ℃ optional)

SFP-1.25G (transceiver mode: single fiber bidirectional/dual fiber bidirectional/dual transmission dual reception/single transmission single reception; wavelength: 850nm/1310nm/155nm/CWDM/DMDM optional; transmission distance: 0-160KM optional; working temperature: commercial grade 0 ℃~+70 ℃/industrial grade -40 ℃~+85 ℃ optional)

SFP-3.125G (Transceiver mode: single fiber bidirectional/dual fiber bidirectional/dual transmitter dual receiver/single transmitter single receiver; wavelength: 850nm/1310nm/155nm/CWDM/DMDM optional; transmission distance: 0-160KM optional; operating temperature: commercial grade 0 ℃~+70 ℃/industrial grade -40 ℃~+85 ℃ optional)

SFP-4.25G (Transceiver mode: single fiber bidirectional/dual fiber bidirectional/dual transmitter dual receiver/single transmitter single receiver; wavelength: 850nm/1310nm/155nm/CWDM/DMDM optional; transmission distance: 0-160KM optional; operating temperature: commercial grade 0 ℃~+70 ℃/industrial grade -40 ℃~+85 ℃ optional)