List Archive: gentoo-amd64
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Am 07.05.2012 23:58, schrieb Michael Scherer:
> meaning the controller then needs different outlets for 3.0 and 2.0
> so I need to use 3.0 cable on the 3.0 one, but 2.0 cable on the other.
Not quite :). A 3.0 USB client (like a 3.0 HDD) will usually come with a
new 3.0 USB cable with additional contacts. The client head is different
than with a USB 2.0 cable. The master head (that plugs into the
controller, your computer or hub) is backwards compatible - if you plug
it into an USB 2.0 port, the additional contacts won't connect and the
HDD will speak USB 2.0. The same goes for a 2.0 client in a 3.0 port.
So, controller side, you can plug everything into everything. Only
client side you have a new outlet (which is good because it prevents you
from using an old 2.0 cable and falling back to slow speed if both your
PC and client speak USB 3.0)