This article sets it out pretty well, gives a history and includes measurements. All modern USB connections are asynchronous.
This post by Brian is also very helpful in understanding the various clocks involved:
Edit: Corrected bad link.
This article sets it out pretty well, gives a history and includes measurements. All modern USB connections are asynchronous.
This post by Brian is also very helpful in understanding the various clocks involved:
Edit: Corrected bad link.