Gentoo Archives: gentoo-amd64

From: "Thomas Rösner" <thomas.roesner@××××××××××××××.de>
To: gentoo-amd64@l.g.o
Cc: Michael Scherer <a6702894@××××××××××××××.at>
Subject: Re: [gentoo-amd64] Drivers For USB HDD
Date: Tue, 08 May 2012 12:03:05
Message-Id: 4FA8FBC2.7030804@digital-trauma.de
In Reply to: Re: [gentoo-amd64] Drivers For USB HDD by Michael Scherer
Am 07.05.2012 23:58, schrieb Michael Scherer:
> meaning the controller then needs different outlets for 3.0 and 2.0 > cables, > 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) Regards, Thomas