Like other models in the WRT54* series, the Linksys WRT543G-ST Mobile Broadband Router will allow you to hook up your Cable/DSL connection and share that bandwidth among multiple computers, either by ethernet connection to its built-in 4-port switch, or via 802.11B/G wireless.The feature that sets this router apart from the rest is that it comes with a standard PC Card slot that will accept a compatible pcmcia card, allowing multiple computers to share bandwidth from an EVDO wireless broadband connection. With this router, users in remote "on-the-road" locations no longer have to share just one EVDO card among many laptops or struggle with complicated and unreliable PC/Mac internet connection sharing methods.To protect your data and privacy, the WRT543G-ST can encode all wireless LAN transmissions securely with WEP or WPA Personal encryption. It can serve as a DHCP Server, has a powerful SPI firewall to protect your PCs against intruders and most known Internet attacks, and supports VPN pass-through. Configuration is a snap with the web-based configuration utility.