A USB Mass Storage Driver is a software component that enables Windows to communicate with devices that use the Universal Serial Bus (USB) interface for data storage, such as flash drives, external hard drives, and SSDs. This driver allows Windows to recognize and access the storage device as if it were an internal drive.
When you connect a USB storage device to your Windows PC, the operating system automatically searches for the appropriate driver to enable communication between the system and the device. Most modern versions of Windows (like Windows 10 and 11) include built-in support for USB Mass Storage devices, but there can be cases where you need to install or update the driver manually.