32-bit 100/10M PCI adapter. This is a 32-bit adapter for using in personal computers with a Peripheral Component interconnect (PCI) computer bus to eliminate I/O bottlenecks and to reduce CPU loading using bus master architecture. This is also a Full-Duplex adapter connected to an Ethernet network with a single connection over unshieded twisted pair (UTP) cable and can auto-sense either 10 Mbps or 100 Mbps by full auto-detection.