The Generic Mobile Broadband Adapter is a type of Windows driver that allows a computer to connect to mobile broadband networks (such as 3G, 4G LTE, or 5G) through a mobile broadband device. This driver is typically used for USB modems, mobile hotspots, or embedded mobile broadband cards installed in laptops or desktops. When you plug in a mobile broadband device, the Generic Mobile Broadband Adapter driver helps Windows recognize and interface with the device so it can access the mobile network for internet connectivity.