This 32-bit 10/100 Mbps PCI Fast Ethernet Network Adapter is ideal for home and small business users who need connectivity to cable or xDSL modems, small gaming LANs, or business networks. They support full duplex operation and auto-negotiation. These features combine to make them among the simplest to use, most affordable desktop solutions available. Fully auto-configurable upon power-up, they support early receive and transmit interrupt to eliminate typical I/O bottlenecks, and feature bus-master architecture to increase data throughput and minimize CPU utilization. This EZ Card provides dual access modes, and is equipped to transfer data at both 10 and 100 Mbps, automatically sensing the speed of the attached device. The full-duplex feature allows simultaneous transmission and reception on a twisted-pair cable when coupled with a full-duplex Ethernet switch, which effectively doubles the bandwidth.