XO Smart Link 4.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software is categorized as Education Tools.
The following version: 4.0 is the most frequently downloaded one by the program users. The program's installer files are commonly found as XoPos.exe or XOSmartLink.exe etc. This free tool was originally designed by Xo Care. We recommend checking the downloaded files with any free antivirus.
From the developer:
XO Smart Link is the worlds most advanced user-interface for dental units and is available exclusively as an option for the XO 4-6 dental workstation. XO Smart Link is a software solution running on a PC connected to the unit.
You may want to check out more software, such as Kalmar Smart Link, D-Link SmartConsole Utility or Easy Smart Configuration Utility, which might be similar to XO Smart Link.