[126565] in North American Network Operators' Group
Re: Off-Topic: use laptop only as USB power supply
daemon@ATHENA.MIT.EDU (Michael Holstein)
Fri May 21 09:49:26 2010
Date: Fri, 21 May 2010 09:48:47 -0400
From: Michael Holstein <michael.holstein@csuohio.edu>
To: Matthias Flittner <matthias.flittner@de-cix.net>
In-Reply-To: <4BF5B476.2020102@de-cix.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
>
> I only need voltage on the USB ports.
Voltage won't be a problem .. current will be.
By default, USB supplies 100ma of power. To switch into "high-power"
mode (500ma) requires the device and the host agree on doing so.
If you're at all handy with a soldering iron, this is a fun project to
do what you need : http://www.ladyada.net/make/mintyboost/
There are also any number of commercial devices that can do universal
voltage (100-250v 50/60hz) to 5v USB that are barely larger than a
matchbook.
Cheers,
Michael Holstein
Cleveland State University
