SFP modules are field-replaceable, and you can insert them into SFP module slots on the front panel of many Cisco devices. You can use the SFP modules for connections to other devices.¤¤This SFP module is compatible with Catalyst 2950ST-24-LRE switch, Catalyst 2950ST-8-LRE switch, Cisco 11503 content services switch, Cisco 11506 content services switch, Cisco CSS5-SCM-2GE, Cisco ONS 15327 G1000-2, Cisco 12000 Series Modular Gigabit Ethernet Line Card (baseboard), WS-X4448-GB-LX Gigabit Ethernet switching module.