If you believe the "Geomaster" in question is an electronic device (like a GPS, printer, or scientific instrument), the term "Driver" refers to software that allows your computer to communicate with the hardware. The search for this software has proven challenging, but here is a step-by-step guide to help you locate it.
When underpinning existing foundations, this driver can reverse (back out) damaged or misaligned piles, a feature often missing in cheaper rotary-only drivers. Geomaster Gm-2020 Driver