This Dell Pro/1000 VT Quad Port PCI-e Network Interface Adapter HM9JY CWKPJ is a powerful and reliable network card that is compatible with PCI Express x4, PCI, and PCI Express ports. It allows for a maximum data rate of 1 Gbps and has four ports, making it a great choice for anyone needing to connect multiple devices to a network. Its external interfaces include RJ-45, Ethernet/Network Cards, Ethernet (RJ-45), and SFP. This network card is perfect for anyone looking for a high-quality, reliable network adapter.