The 3COM 3C996B-T Gigabit Ethernet Card is a high-performance network card that provides fast and reliable internet connectivity. With support for 3.3V and 5V, 32-bit and 64-bit PCI ports, this card is compatible with a wide range of computers. The external interfaces include RJ-45 connectors, making it easy to connect to a network using standard Ethernet cables. The 3C996B-T model from 3Com is a trusted choice for businesses and home users looking to upgrade their computer's networking capabilities.