CISCO - SWITCH - 48 PORTS - PLUG-IN MODULE (WS-X4148-FX-MT). KEY FEATURES : DEVICE TYPE : SWITCH - 48 PORTS ENCLOSURE TYPE : PLUG-IN MODULE INTERFACES : FAST ETHERNET PORTS : 48 X 100BASE-FX COMPLIANT STANDARDS : IEEE 802.3U DESIGNED FOR : CATALYST 4000, 4003, 4006 CONDITION : REFURBISHED. AVAILABILITY : IN STOCK. OUR WARRANTY : 30 DAYS.