In the last batch of PassMark USB 2 loopback plugs manufactured there was an unintended change in the way some of the plugs identify themselves.
Due to this change the Linux version of BurnInTest and some older versions of BurnInTest for Windows (4) are not recognising a small number of the plugs as PassMark loopback plugs and not starting the USB test correctly.
A new build of Linux BurnInTest will be available soon to fix this problem.
The current version of Windows BurnInTest (6) is not affected by the problem and should recognise all the plugs.
Due to this change the Linux version of BurnInTest and some older versions of BurnInTest for Windows (4) are not recognising a small number of the plugs as PassMark loopback plugs and not starting the USB test correctly.
A new build of Linux BurnInTest will be available soon to fix this problem.
The current version of Windows BurnInTest (6) is not affected by the problem and should recognise all the plugs.