Frequently Asked Question - I can boot successfully from the Multipurpose USB device, but Service Center becomes dysfunctional when I remove it. Why is this?

I can boot successfully from the Multipurpose USB device, but Service Center becomes dysfunctional when I remove it. Why is this?

The Multipurpose USB Device is a dongle in addition to a test and indicator device. It must remain plugged in for all Service Center use in both Windows and DOS.