The 3Com 3C905C-TXM Fast EtherLink PCI 10/100 100Mbps RJ-45 Ethernet Card is a universal, plug-in card that provides a single 100 Mbps Ethernet port for wired networking connections. With its compact size and compatibility with various brands and PCI ports, this network card is a versatile option for enhancing your computer's networking capabilities. Designed to meet IEEE 802.3 standards, this 3Com Ethernet card is a reliable choice for improving your computer's network speed and functionality.