The IO OCX ActiveX control provides access to I/O ports under ALL 32-bit versions of Windows. Windows NT/2K/XP support has been added (December 24, 2001) by employing DriverLINX PortIO (www.sstnet.com). DriverLINX PortIO may be freely used in accordance with the License agreement provided in the install (included in the Download above). Install DriverLINX PortIO before attempting to use IOOcx. The IOOcx properties, events, and methods are as follows: