Adaptor USB/Serialport 10-EF NEW! This is Easier to use, Faster and Cheaper. Cut out the issues in getting started with Picaxe. Simply plug it in and the computer will assign the Proflic driver to run it (part of the Windows 7 to 10 packages).No hassles. The unit has proved reliable, is painless to set up and is much faster than other variants used in teacher courses.