Cisco Transceiver Modules support Ethernet, Sonet/SDH and Fibre Channel applications across all Cisco switching and routing platforms.
CablesAndKits provides two options when purchasing GBIC, SFP, and other Transceivers.
Cisco Label (Cisco Original) - Transceivers manufactured by Cisco.
OEM Label (3rd party compatible transceivers) - Transceivers manufactured by companies other than Cisco. OEM transceivers are exactly the same as Cisco Original Transceivers but offer a longer warranty and are a more economical solution.