The SAMSUNG USB Composite Device V2 Windows Driver is a driver that enables communication between a Samsung device (such as a smartphone, tablet, or another USB-enabled device) and a Windows computer. The "USB Composite Device" refers to a USB device that supports multiple functionalities or device types, such as mass storage (e.g., file transfer), media devices (e.g., audio), and mobile management (e.g., ADB for developers).

The V2 indicates it's a newer version of the driver, and this specific driver package typically supports various Samsung devices, especially older or non-MTP (Media Transfer Protocol) devices, or devices in USB debugging mode for development purposes. It might also be relevant for devices that use Samsung's proprietary USB interface to sync or transfer data to a PC.