The Silicom Gigabit Ethernet PCI Express server adapters are PCI Express network interface cards that contain Multiple / Single independent Gigabit Ethernet port/s on a PCI Express adapter. Silicom Gigabit Ethernet PCI Express server adapters are Silicom's second-generation solution for high performance Server Network application. Silicom Gigabit Ethernet PCI Express Servers adapters are based on Broadcom BCM57XX PCI-E / PCI-X Gigabit Ethernet controllers that feature an industry first support for PCI Express server Adapters.