Contents 7Wireless Local Area Network. . . . . . . . . . . . . . 92What You Need to Establish a WLANConnection . . . . . . . . . . . . . . . . . . . . . 92Checking Your Wireless Network Card. . . . . . . 93Setting Up a New WLAN Using a WirelessRouter and a Broadband Modem. . . . . . . . . . 94Connecting to a WLAN . . . . . . . . . . . . . . . 95Mobile Broadband (or Wireless Wide AreaNetwork) . . . . . . . . . . . . . . . . . . . . . . . . . 96What You Need to Establish a MobileBroadband Network Connection . . . . . . . . . . 97Checking Your Dell™ Mobile Broadband Card . . . 97Connecting to a Mobile Broadband Network . . . 98Enabling/Disabling the Dell MobileBroadband Card . . . . . . . . . . . . . . . . . . 99Dell Wi-Fi Catcher™ Network Locator . . . . . . . . . 9911 Securing Your Computer . . . . . . . . . . . . 101Security Cable Lock . . . . . . . . . . . . . . . . . . . 101Passwords . . . . . . . . . . . . . . . . . . . . . . . . 101If Your Computer Is Lost or Stolen . . . . . . . . . . . . 10212 Troubleshooting . . . . . . . . . . . . . . . . . . . 105Dell Technical Update Service . . . . . . . . . . . . . 105Dell Diagnostics . . . . . . . . . . . . . . . . . . . . . 105Dell Support Center . . . . . . . . . . . . . . . . . . . 110Dell Support . . . . . . . . . . . . . . . . . . . . 110Dell PC TuneUp . . . . . . . . . . . . . . . . . . . 111