They are pre-configured with an application specific code to meet the requirement set forth by the router and switch OEMs. These compatible transceivers perform, fit and function identically when compared to "Original" Transceivers. FeaturesEthernet 100Base-FX CablingSupports Fast Ethernet NetworkingSpecificationsData Range: 100Base-FXForm-factor: SFPConnector: LCWavelength: 1310 nmDistance: 40 kmWeight: 0.04 lbs- SKU: SYBA35224