The EN-9260TX-E network adapter for PCs with PCI Express slots offers the technology in power management & Gigabit Ethernet network connectivity capability. The EN-9260TX-E's full bandwidth capability boasts a robust capability through the PCI Express bus architecture. There's no need to purchase a switch or broadband router because the adapter's auto negotiation feature works with your existing switch, broadband router, or hub to provide the highest network speed available. The adapter's automatic full duplex capability further increases bandwidth & eliminates packet collisions by allowing data to flow in both directions at the same time.