The Option GTM68x - GPS Interface Windows Driver is a software component that allows your Option GTM68x GPS receiver (a GPS module or device) to communicate with your Windows computer. The driver enables the computer to interface with the GPS receiver, allowing you to access location data from the GPS device through supported software or applications. These applications could include mapping software, navigation tools, or custom applications that require GPS data input.

The Option GTM68x refers to a specific series of GPS receivers designed for various embedded applications, but the installation procedure for the Windows driver is generally the same regardless of the exact model (like GTM680, GTM682, etc.).