Cisco Small Business MFEFX1 - SFP (mini-GBIC) transceiver module - 100Mb LAN - 100Base-FX - LC multi-mode - up to 1.2 miles - 1310 nm - refurbished - for Small Business Smart SF200-24/ SF200-24FP/ SF200-24P/ SF200-48/ SF200-48P/ SG200-18