Cisco 1000Base-LX/LH SFP Digital Optical Monitoring 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/2950ST-8-LRE/Cisco 11503/11506 content services switch/Cisco CSS5-SCM-2GE/ONS 15327 G1000-2/Cisco 12000 Series Modular Gigabit Ethernet Line Card/WS-X4448-GB-LX Gigabit Ethernet switching module. Picture (if present) is for visual purposes only and might not reflect the actual product you receive. Cisco Factory Refurbished/Recertified w/1 year Cisco Warranty. Minimum 3-7 day lead time to ship. Please call for shipping quote and for price and availability before buying, as they can change at any time.