Cisco-Linksys WPC54GX4 Wireless-G Notebook Adapter with SRX 400 High-speed Wireless-G networking with SRX performance enhancement for your notebook SRX technology performs up to 10 times faster than standard Wireless-G (802.11g) SRX also increases wireless range by up to 3 times and reduces dead spots in coverage area Enjoy high-speed wireless network access while retaining true mobility Interoperates with standard Wireless-G, Wireless-B, and other SRX devices