USB has been on our desktops and laptops since about 1997 or so, and since then it has been the mainstay of computer peripherals. No other connector is as useful for connecting mice, keyboards, ...
It's easy to justify keeping some old cables around, but a few have become so obsolete that they're probably doing nothing ...
Read part 1 of this series on the basics of transmitter and receiver testing for the latest version of USB and part 3 on power delivery. For all of its virtues around plug-and-play device ...