The Prolific USB-to-Serial Comm Port (GPS) Windows driver refers to a device driver that enables communication between a computer and devices that use a USB-to-serial connection. Prolific is a well-known manufacturer of USB-to-serial adapter chips, and the driver allows the operating system to recognize and use the USB-to-serial adapter for transferring data between the computer and various devices (such as GPS units, modems, sensors, or other serial communication devices).

When you connect a Prolific-based USB-to-serial adapter to your computer, the operating system needs the correct driver to enable proper communication. If you're specifically using this adapter for GPS data or a similar application, the driver ensures that the device can communicate via the serial port protocol.