The IBM NetXtreme II 1000 Express Dual-Ports is a Gigabit Ethernet adapter designed for System X servers. It supports 10Base-T, 100Base-TX, and 1000Base-T networking standards, providing fast and reliable network connectivity. The adapter uses PCI Express 2.0 x4 technology, ensuring high-speed data transfer and minimal latency. With its dual-ports, it allows for simultaneous network connections, improving network performance and enabling load balancing. The adapter is manufactured by Broadcom, a leading provider of networking hardware, ensuring high quality and compatibility with System X servers. Overall, the IBM NetXtreme II 1000 Express Dual-Ports is a reliable and efficient Ethernet adapter for System X servers.