CISCO - 48-PORT 1 GIGABIT COPPER ETHERNET MODULE WITH DFC4 - EXPANSION MODULE - 48 PORTS (WS-X6848-TX-2T). KEY FEATURES : DEVICE TYPE : EXPANSION MODULE FORM FACTOR : PLUG-IN MODULE PORTS QTY : 48 PORTS CABLING TYPE : ETHERNET 10BASE-T, ETHERNET 1000BASE-TX, ETHERNET 100BASE-TX DATA LINK PROTOCOL : ETHERNET, FAST ETHERNET, GIGABIT ETHERNET DATA TRANSFER RATE : 1 GBPS CONDITION : NEW FACTORY SEALED. AVAILABILITY : IN STOCK. OUR WARRANTY : 30 DAYS.