Re: [LAU] Recommended USB interface with 2 XLR inputs?

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To: Mark Knecht <markknecht@...>
Cc: Arnold Krille <arnold@...>, <linux-audio-user@...>
Date: Monday, May 2, 2011 - 10:30 pm

As was already mentioned before, USB spec is far less than the power
needed to power a laptop hard drive. Many USB implementation break
this spec and provide more power, but just because a hard drive
doesn't work, doesn't mean a USB port doesn't provide power. The only
type of HD that MIGHT be able to work under USB spec, and I would want
to check this, is a SSD.

Also as was mentioned, all USB ports provide some power, and so long
as the device is within spec, they will get the power needed. It
takes much more power to spin a motor in an external drive than it
does to power a non-moving device. For the record, the power draw for
that UA25 is 480mA as listed on the site, so it appears to be within
spec(Albiet on the very high end of it:)

Seablade

PS By the way, you can conceivably damage a proper in spec USB ports
with those 'bus powered' hard drives IIRC. I wouldn't ever trust them
myself.

On Mon, May 2, 2011 at 6:10 PM, Mark Knecht wrote:

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Messages in current thread:
[LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Fri Apr 29, 10:25 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Jaromír Mikeš, (Thu May 12, 7:03 am)
Re: [LAU] , Rafal Zawadzki, (Wed May 25, 1:55 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Emanuel Rumpf, (Wed May 25, 3:30 pm)
Re: [LAU] , Rafal Zawadzki, (Thu May 26, 4:57 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Thomas Vecchione, (Sat Apr 30, 9:56 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Thomas Vecchione, (Sun May 1, 6:46 am)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Bernardo Barros, (Tue Oct 11, 7:19 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Clemens Ladisch, (Tue Oct 11, 7:40 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Jeremy Jongepier, (Sat Apr 30, 6:55 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Sat Apr 30, 9:33 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Arnold Krille, (Sun May 1, 3:33 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Jeremy Jongepier, (Sun May 1, 8:57 am)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Hakan Koseoglu, (Mon May 2, 10:19 am)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Arnold Krille, (Mon May 2, 9:36 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Mon May 2, 10:10 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Thomas Vecchione, (Mon May 2, 10:30 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Thomas Vecchione, (Tue May 3, 10:09 am)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Dave Phillips, (Sat Apr 30, 10:05 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Sat Apr 30, 10:27 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Jeremy Jongepier, (Sun May 1, 8:51 am)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Fritz Meissner, (Sat Apr 30, 5:22 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Ronald Stewart, (Fri Apr 29, 11:22 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Sat Apr 30, 6:15 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Fons Adriaensen, (Sat Apr 30, 8:11 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Sat Apr 30, 9:27 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Fons Adriaensen, (Sat Apr 30, 10:19 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Arnold Krille, (Sun May 1, 3:29 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Fons Adriaensen, (Sun May 1, 7:42 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Mark Knecht, (Sat Apr 30, 10:32 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Gabriel M. Beddingfield, (Fri Apr 29, 10:34 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Fritz Meissner, (Sat Apr 30, 12:14 pm)
Re: [LAU] Recommended USB interface with 2 XLR inputs?, Jeremy Jongepier, (Sat Apr 30, 6:51 pm)