I understand you're looking for Sokkia ProLink 115 software, likely for data transfer between Sokkia surveying instruments (like the Sokkia 115 series total station) and a computer.
Conclusion
The search for a working Sokkia ProLink 115 software free download is a rite of passage for surveyors maintaining legacy gear. While it is possible to find and run ProLink 115 for free, success depends entirely on your operating system, cable quality, and driver configuration.
However, I must clarify a few important points before providing guidance:
- Avoid cheap adapters (no-name brands from Amazon/eBay).
- Use a FTDI or Prolific PL-2303 chipset adapter.
- Download the latest driver from the chip maker’s website (not Windows Update’s generic driver).
- After installation, go to Device Manager → Ports (COM & LPT).
- Find your USB Serial Port → Right-click → Properties → Port Settings.
- Set Bits per second: 9600 or 4800 (match your Sokkia instrument’s setting).
- Click Advanced → COM Port Number: Choose COM1, COM2, COM3, or COM4 (ProLink 115 often cannot see COM ports above COM9).