This startechcom gigabit fiber sfp is engineered to deliver reliable network connections built to exacting specifications and fully tested to ensure maximum performance this high quality fiber transceiver module can be installed into ciscoreg switches and routers that support the cisco glc zx sm rgd transceiver module as well as other major brands of networking equipment this 1000base zx sfp delivers gigabit connectivity over single mode fiber cable with a range of up to