For a while I thought I could distinguish between USB 2.0 and 3.0 (or 3.1 gen 1) standars from the hardware point of view. Now I am confused however, because I have noticed that my USB 3.0 hub has the additional differential pairs contacts on its male plug (device side, goes to the host) but does not have them on its 4 USB female connectors host side, goes to the devices). At first I thought that this is a fake 3.0 hub, but the USB Tree Device viewer reports the connected devices through the hub are at SuperSpeed bus. How is that possible? I also did notice that connecting such hubs in series makes the last device in the chain to nor support SuperSpeed anymore (at least this makes sense to me).
How is it possible that the USB 3.0 hub doesnt have the additional diff pairs for the devices and support SuperSpeed anyway?