Can't say I would know whether my blue connectors actually go fast...
Another fun USB discovery I recently made:
For some reason, my USB headset doesn't work when I plug it into my laptop ...except when I plug it into one particular USB port. There it works reliably. I have no idea how or why.
Due to cost saving its common for a new laptop to some ports of different USB specification now.
If you look closely some may be marked by a different logo like s.s (super speed I think)