[MinnowBoard] J2 for powering a ssd

David Byte dbyte at suse.com
Fri Nov 7 14:44:39 UTC 2014


The hub is a special one I bought because it can handle 1A out on the 
ports (bought it for RPi).

On 11/7/2014 8:09 AM, Thiago Tenório Jordão de Vasconcelos wrote:
> David,
>
> Don't do that unless your drive get less than 0.5A and/or your powered 
> hub allow more than 500ma draw.
> Don't forget that every USB out is rated 500ma.
>
> I did that using a cellphone charger rated 2A for my drive. xD
>
> Thiago Vasconcelos
>
>
> On Fri, Nov 7, 2014 at 11:04 AM, Arne Gollin 
> <arne.gollin at googlemail.com <mailto:arne.gollin at googlemail.com>> wrote:
>
>     THX i will double check.
>
>     Am 07.11.2014 15:02 schrieb "Thiago Tenório Jordão de Vasconcelos"
>     <thiagottjv at gmail.com <mailto:thiagottjv at gmail.com>>:
>
>         Arne, did you checked the polarity of the J2?
>
>         On the docs say that pin 1 is ground and pin 2 is 5V. But in
>         my board is inverted. The pin 2 is ground and pin 1 is 5V.
>
>         Thiago Vasconcelos
>
>         On Fri, Nov 7, 2014 at 10:55 AM, "Thomas B. Rücker"
>         <thomas at ruecker.fi <mailto:thomas at ruecker.fi>> wrote:
>
>             Hi,
>
>             On 11/07/2014 01:51 PM, Arne Gollin wrote:
>             >
>             > Hey, i wanted to power a SSD using the j2 Pins which
>             provide 5v
>             > usually for a fan. I bought a SSD which at max uses 0.5
>             watts... So
>             > this should be fine since the Pins provide 1 A. But when
>             i plug in the
>             > SSD and start the board is always shortcuts. I tried to
>             use the j5 or
>             > j6 the one with 5v, and this would work when it would
>             provide more amper.
>             > So what is wrong with the j2 Pins? I tested my cable but
>             this seems to
>             > be OK.
>             >
>
>             What is the rating of the power supply, that you are using
>             for your MAX?
>             The drive might have a significant initial draw and that
>             combined with
>             the CPU might just overload your power supply.
>
>
>             Cheers
>
>             Thomas
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>
>
>
>
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