Type: PCMCIA Ethernet Adapter Standards: IEEE802.3, IEEE802.3u, IEEE802.3ab Max Data Rates: 10/100/1000Mbps Ports: RJ-45 Interface: PCMCIA Chipset: Agere Systems ET-131x chipset Operating Systems Supported: Windows 98SE/ME /2000/ XP 32/64-Bit/ Server 2003 32/64-Bit/ Vista 32/64-Bit/ Server 2008 32/64-Bit/ Windows 7 32/64-Bit Features: Fully compliant with ExpressCard Specification 1.0 ExpressCard 34mm Form Factor Module Support 10/100/1000 Base-T with Auto-Negotiation Automatic crossover detection and correction supported Fully plug & play and hot plug supported Feature full duplex mode that doubles that the network connection Agere Systems ET-131x chipset.