Date: Tue, 03 Apr 2012 22:20:25 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Ron McDowell <rcm@fuzzwad.org> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: Switching on/off 5V power to a USB port Message-ID: <57208.1333491625@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 03 Apr 2012 17:13:47 EST." <4F7B761B.4030104@fuzzwad.org>
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In message <4F7B761B.4030104@fuzzwad.org>, Ron McDowell writes: >I just got a little USB powered fan and it sure would be nice if I could >have cron on my FreeBSD box turn it on or off at certain times by >switching off the 5V line on a USB port. Anyone know how I can do >that? Thanks. I have only found very few USB ports where it was possible to reliably control power with a published interface. Most USB-controllers support doing it, but most motherboards don't mount the necessary FET. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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