2.0 (ancient speed, used for charging only these days)
And for uploading the firmware into nearly every small device you have that has a microcontroller with some flash memory on it. They still use TTL serial, so a USB 2.0 to TTL serial adapter is often used. It's also still widely in use for, again, programming of things like commercial/industrial fire/burglar alarm panels.
Often, things we consider "old" in the consumer space go on to live for decades just fine in the industrial/commercial space.