These SFP transceivers (Small Form fractor Pluggables), also called Mini-GBICs, are to connect a fiber optic network cable to a data communications unit like a switch, router, firewall, or media converter which contains a SFP slot to accept the SFP device. The SFPs come in versions for multimode, singlemode, WDM, and even copper (UTP) Ethernet network cables. SFPs normally transmit and receive gigabit Ethernet signals.
By using a network device with a SFP slot, you always have the capability to upgrade or change the network connection by simply replacing the SFP module.
A few network equipment manufacturers do not program their equipment to meet the industry MSA (Multi-Source Agreement) specifications. They will set their equipment to require SFPs programmed with their specific corporate ID within the memory of the SFP. These practices break with the generic compatibility agreed to by most manufactures. The most common equipment manufacturers that require special SFPs are: Cisco, HP, and 3Com. We can provide these compatible devices, but we suggest you call our fiber optic sales technicians to assist you with ordering the correct SFP.