it's the computer

Posted by Joe Murphy Jr (A) on May 18, 2012 at 09:06:46

In Reply to: USB cable with two type A plugs posted by Dantheman on May 17, 2012 at 19:59:26:

It has to do with the computer either needing to see activity on the + or - side of the USB power connection to recognize that something is there. I'm pretty sure you can plug in both ends (the "data" USB and the "power" USB) so that the computer recognizes there's a connection (the DAC shows up) and then unplug the "power" end.

There are computers that will recognize a "data" line without a "power" line. It seems Apple's computers want to see the "power" line.

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Follow Ups Full Thread

Topic - USB cable with two type A plugs - Dantheman 19:59:26 05/17/12 (12)

My Truharmonix DAC uses type A at the DAC input; thus, A to A - Muzikmike 04:54:02 05/21/12 (3)

RE: My Truharmonix DAC uses type A at the DAC input; thus, A to A - Muzikmike 19:00:54 05/23/12 (1)

before you do that - Joe Murphy Jr 01:32:48 05/24/12 (0)

question - Joe Murphy Jr 07:41:44 05/21/12 (0)

it's the computer - Joe Murphy Jr 09:06:46 05/18/12 (7)

RE: it's the computer - Dantheman 21:16:56 05/19/12 (6)

if you want to know more - Joe Murphy Jr 09:47:39 05/20/12 (5)

RE: if you want to know more - Dantheman 21:55:42 05/20/12 (4)

you're welcome + a question - Joe Murphy Jr 14:26:17 05/21/12 (3)

RE: you're welcome + a question - Dantheman 17:18:41 05/21/12 (0)

RE: you're welcome + a question - Dantheman 17:04:27 05/21/12 (1)

thanks [nt] - Joe Murphy Jr 17:06:44 05/21/12 (0)

Follow Ups

it's the computer - Joe Murphy Jr 09:06:46 05/18/12 (7)

RE: it's the computer - Dantheman 21:16:56 05/19/12 (6)

if you want to know more - Joe Murphy Jr 09:47:39 05/20/12 (5)

RE: if you want to know more - Dantheman 21:55:42 05/20/12 (4)

you're welcome + a question - Joe Murphy Jr 14:26:17 05/21/12 (3)

RE: you're welcome + a question - Dantheman 17:18:41 05/21/12 (0)

RE: you're welcome + a question - Dantheman 17:04:27 05/21/12 (1)

thanks [nt] - Joe Murphy Jr 17:06:44 05/21/12 (0)

it's the computer

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