The HP NC364T PCI Express Quad-Port Gigabit Server Adapter features four 10/100/1000T Gigabit Ethernet Ports on a Single Card, saving valuable Server I/O Slots for other purposes. The HP 435506-003 4-Ports Ethernet Adapter provides the highest port density available for ProLiant Servers in a single PCI Express Network Adapter. HP 435506-003 NC364T Ethernet Adapter is ideal for Virtualization, Security, server Consolidation, Network Segmentation, and other ProLiant server applications requiring maximum throughput and port density. The total aggregate throughput of 4Gbps meets the needs of customers desiring High Bandwidth but are not yet ready to move to 10 Gigabit Ethernet. The x4 PCI Express interface is compatible with x4, x8, and x16 PCI Slots.