NETGEAR's GA302T Copper Gigabit Adapter supercharges your office network and eliminates network traffic slowdowns. It supports 1000 Mbps over your existing Cat 5 networking cables -- no extra cabling needed -- and up to 2000 Mbps of full-duplex bandwidth over copper wiring. Since this flexible adapter runs at 10, 100, or 1000 Mbps, you can plug it in now and upgrade the rest of your network when you're ready. It detects speed and duplex without any manual setup. Optimized drivers, demonstrated functionality within Windowsr network operating systems- including Windows XP- combine with Plug and Play technology to ensure trouble-free setup and performance.