It is rather odd that all other devices seem to be working except for these particular thumb drives. You may be able to get a better explanation as to what’s going on by contacting Sandisk however, we’re definitely willing to look into anything that could stand out preventing it from connecting.
The next step is to get some additional information.
Please keep the dock connected to your system (even though not working) and send the output of our diagnostic utility PlugDebug → http://plugable.com/support/plugdebug to us directly via email@example.com with ‘For Ticket 388531’ in the subject line. This will allow us match things up and examine some log files from your system to help determine the next steps.
Please also include your Amazon Order ID number for the docking station purchase in your direct email. Please do not post the Order ID or the PlugDebug file in our public forum.
Thank you for giving us the chance to help!