"From NICs to switches, JetLAN network connectivity solutions from Cables To Go enhance the performance, flexibility, and reliability of your network. With JetLAN, expanding your network is easy. Plug and play features allow for fast, hassle-free installation so you'll never miss a beat! The JetLAN PC Card Ethernet Adapter is the perfect way to network your notebook! Auto-negotiation allows the JetLAN Adapter to distinguish between the signals from 10Base-T or 100Base-TX lines and adjust accordingly, which translates into ease of use. With JetLAN, compatibility won't be an issue. The included drivers support most popular operating systems such as WFW3.11, Windows(R) 95/98/2000, Windows(R) NT4.0, Novel (R)3.x, Novel (R)4.x, Unixware 7.0, and more. Maximizing your network potential and minimizing configuration headaches make JetLAN a win/win solution! Features: Supports 10Mbps or 100Mbps operation with auto-negotiation (Nway) function. PCMCIA Cardbus compliant for 32-bit bus master operation, for low CPU utilization. Full-duplex operation for up to 200Mbps data transfer rate, full- duplex flow control (IEEE 802.3x). Compatible with Novell(R) NetWare 3.x/4.x, WFW3.11, Windows(R) 95/98/2000/NT 4.0, Linux(R) Slackware/Red Hat, Unixware 7.0, Fto PC/TCP, NCSA TCP/IP. Please note - once this item is opened it is non-returnable unless defective."