I've been looking at USB extension cables recently (type A male to type A female), however I've been surprised by the number of cables describing themselves as USB 2.0 or even USB 2.0 only. However, as far as I can tell the type A connector hasn't changed between USB 2.0 and USB 3.0.
While I realise that a USB 2.0 type A cable should work just fine with USB 3.0 capable devices at USB 2.0 speeds, what I'd like to know is whether a type A to type A cable can in fact be limited to USB 2.0 only speeds, even when plugged into USB 3.0 port and connecting a USB 3.0 device, or if this is simply a mislabelling?
I'm generally wary of this sort of thing, as manufacturers have touted misleading cable compatibility in the past, for example expensive "SATA III" cables, even though any cable suitable for SATA II works just fine, provided it has decent shielding etc.