A USB Wireless Modem (also sometimes called a USB dongle or USB mobile broadband modem) is a device that allows you to connect to the internet using a mobile data network (such as 4G LTE or 5G) via USB. These modems are typically used when you don't have access to a traditional broadband connection (like DSL or cable) and instead rely on cellular networks for internet access.

The Windows driver for a USB wireless modem is a piece of software that enables the device to communicate with your Windows computer. It ensures that the USB modem works properly, allowing you to connect to the internet, manage network settings, and use the modem's features on your PC.