Quite simply, if you want a connection at home, you need the CLEAR WiMAX Modem. If you need a mobile connection, you need the CLEAR WiMAX USB Modem. The WiMAX Modem is a device that needs a little bit of desktop space (about 10 inches tall) and connects to your computer by a typical Cat-5 Ethernet cable and doesn’t need any special software. It needs AC power. The WiMAX USB Modem connects to your notebook, or any computer, via a USB connection. It doesn’t need external power, but it does need drivers installed. Currently, only PC (Windows) drivers are available.