Connectivity you can count on for pcs with pci express pcie slots the intelreg gigabit ct desktop adapter offers the newest technology for maximizing system performance and increasing end user productivity specifically the intel gigabit ct desktop adapter uses auto negotiation to ensure the adapter runs at the highest available network speed 10 100 or 1000 mbps and it maintains full bandwidth capacity with the dedicated bandwidth of a pci express inputoutput io bus to provide co