: Serial port or USB-to-Serial adapter for instrument connection. : Approximately 20–50 MB of free space. 3. Installation Steps Download the Setup File : Save the or compressed folder to your desktop. Extract (if necessary) : If the download is a , extract it before running the setup. Run as Administrator : Right-click the install.exe and select Run as Administrator to ensure proper registry access. Follow the Wizard Select your language. Accept the license agreement. Choose a destination folder (the default is usually C:\Program Files\Sokkia\Prolink Complete & Restart

| Problem | Solution | |---------|----------| | “COM port not found” | Reinstall USB driver from the ProLink 115 installation folder ( C:\Program Files\Sokkia\ProLink 115\Drivers ). | | Connection times out | Lower baud rate to 9600 on both PC and total station. | | Installation fails on Windows 10/11 | Run the installer in (Right-click → Properties → Compatibility). | | Antivirus blocks the file | This is often a false positive. Add the installer to your AV’s exclusion list, but only if downloaded from an official source. |

Verdict