With the smallest form factor in the market, the Sunrise USB Modem provides high-speed access on our 1x/EV-DO network. No CD is required for installation! Just insert the device, allow the drivers to auto-install, and 3G USB Modem Manager Installer automatically launches. The modem is compatible with computers that support a Type A USB port and comes equipped with hot-swappable removal memory support - up to 8GB. It also comes with a built-in, high-performance internal antenna with no external parts to break. Have internet anywhere that has a cellphone signal.