ThinkStation Broadcom BCM5719-4P Quad-port Gigabit Ethernet Adapter is a quad-port 10/100/1000 Mb/s x4 PCI Express (PCIe) Specification v2.1 Ethernet adapter that supports offload technologies, including Large Send, TCP segmentation, and TCP/UDP/IP checksum, and Receive Side Scaling (RSS) that deliver optimal network throughput, lower host processor utilization and, as a result, improve system overall performance.