Manufacturer: Cisco Systems Model/Part #: DS-SFP-FC4G-LW Other Model/Part #: DS-SFP-FC4G-LW= Category: Network & Telecommunication » Transceivers (GBIC/SFP) | Cisco Systems DS-SFP-FC4G-LW 1000BASE-SX 1g/2g/4gb/s Long Wavelength SFP Transceiver Adapter. |