The Mobile Connect - Modem Windows driver is software that allows a mobile phone (often a smartphone or mobile broadband device) to function as a modem on your Windows PC. This driver enables your PC to use the mobile phone's cellular data connection to access the internet, either through USB tethering or via Bluetooth. The driver may be part of a larger software suite provided by the device manufacturer, such as Dell Mobile Connect, Huawei HiLink, or ZTE Mobile Hotspot, depending on the specific device you're using.