Blue "USB 3.0" extension cable has "USB 2.0" printed on the cable itself; which USB is it truly?

Elaboration: recently bought 4 blue USB 3.0 extension cables - the cable itself was blue, the ports are too, yet upon reading the text printed on each cable, it says: USB 2.0 Cable . There are 9 pins inside the male plugs and female ports, hence I ask: do I assume it's USB 3.0 and consider the text a typo, or is there more to it than meets the eye?

Question by Ahmed Salem on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.