Gentoo Archives: gentoo-amd64

From: Mark Knecht <markknecht@×××××.com>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] Drivers For USB HDD
Date: Tue, 08 May 2012 00:05:31
Message-Id: CAK2H+efnGaWEhn4yga_+5=j2WUzBmTO62FVBz2-i+mcF0SX2jw@mail.gmail.com
In Reply to: Re: [gentoo-amd64] Drivers For USB HDD by Michael Scherer
1 On Mon, May 7, 2012 at 2:18 PM, Michael Scherer
2 <a6702894@××××××××××××××.at> wrote:
3 > Seems this either a typo, or a contradiction:
4 > "The USB 3.0 sockets are backward-compatible with older ... cables"
5 > would mean I can use the old cables for 3.0, but then
6 >
7 > "but older USB cables are not forward-compatible with USB 3.0"
8 > says I can NOT use the old cables.
9 > I have no 3.0, but some day I probably will, so I'd like to know what
10 > exactly you mean.
11 >
12 > kind regards
13 >
14 > michael
15 >
16 > --
17 > Michael Scherer
18 > Univ.klinik f. Psychiatrie
19 > email: michael.scherer@×××××××××××××.at
20 > phone: +43 6991 941 22 54
21 >
22
23 I believe what Paul was saying was that _IF_ a USB 3.0 Controller is
24 designed to support both 3.0 AND 2.0 devices then the socket is
25 compatible with both 2.0 & 3.0 cables. However if you use a 2.0 cable
26 you have to use a 2.0 device. You cannot, TTBOMK, use a 2.0 cable with
27 a 3.0 device.
28
29 At least that's how I read his response.
30
31 HTH,
32 Mark