If you have an original Advantage, IIRC that was one of the known issues that got fixed in the Advantage2 (or perhaps one of the Advantage2 firmware updates). I

If you have an original Advantage, IIRC that was one of the known issues that got fixed in the Advantage2 (or perhaps one of the Advantage2 firmware updates). I'm having trouble finding a source now, but Kinesis' site does state: > "The firmware of the original Advantage was developed prior to the advent of modern operating systems and USB 3.0. As a result, it is not uncommon for original Advantage keyboards to become unreliable when used on newer PCs and operating systems as they were not designed with these protocols in mind." [0] [0] https://kinesis-ergo.com/support/advantage/ https://kinesis-ergo.com/support/advantage/