Does anybody know how to use a stand-alone power supply to provide
power to additional hard drives connected to the motherboard, in other
words these are not external hard drives with their own power supply.
"Tuco Ramirez" <tucodrat@yahoo.com> wrote...
> Does anybody know how to use a stand-alone power supply to provide
> power to additional hard drives connected to the motherboard, in other
> words these are not external hard drives with their own power supply.
Why not just connect them to the main power supply, just as you connected the
data cables to the internal bus cables? If that is too small, replace it with a
bigger one!
Most people would get an external enclosure that comes with its own power
supply, but it sounds like you didn't do that...
I suppose you could buy another computer PSU and mount it outside the case
somehow...
On Dec 27, 4:50*pm, "John Weiss"
<jrweiss98155NOS...@NOSPAM.comcast.net> wrote:
> "Tuco Ramirez" <tucod...@yahoo.com> wrote...
> > Does anybody know how to use a stand-alone power supply to provide
> > power to additional hard drives connected to the motherboard, in other
> > words these are not external hard drives with their own power supply.
>
> Why not just connect them to the main power supply, just as you connected the
> data cables to the internal bus cables? *If that is too small, replace it with a
> bigger one!
>
> Most people would get an external enclosure that comes with its own power
> supply, but it sounds like you didn't do that...
>
> I suppose you could buy another computer PSU and mount it outside the case
> somehow...
That's what I am asking about! There is only so much power that the
installed power supply gives out, so I want a few hard drives with
their own power supply, but connected to the motherboard for speed.
On Thu, 27 Dec 2007 14:36:58 -0800 (PST), Tuco Ramirez
<tucodrat@yahoo.com> wrote:
>On Dec 27, 4:50*pm, "John Weiss"
><jrweiss98155NOS...@NOSPAM.comcast.net> wrote:
>> "Tuco Ramirez" <tucod...@yahoo.com> wrote...
>> > Does anybody know how to use a stand-alone power supply to provide
>> > power to additional hard drives connected to the motherboard, in other
>> > words these are not external hard drives with their own power supply.
>>
>> Why not just connect them to the main power supply, just as you connected the
>> data cables to the internal bus cables? *If that is too small, replace it with a
>> bigger one!
>>
>> Most people would get an external enclosure that comes with its own power
>> supply, but it sounds like you didn't do that...
>>
>> I suppose you could buy another computer PSU and mount it outside the case
>> somehow...
>
>That's what I am asking about! There is only so much power that the
>installed power supply gives out, so I want a few hard drives with
>their own power supply, but connected to the motherboard for speed.
You coul dhave something like this but if you buy this you would have
too much power...You may aswell just buy a more powerful internal PSU
I upgraded to a 550W 2 months ago and was very cheap...
On Thu, 27 Dec 2007 23:06:51 +0000, Craig Coope
<coope1999@hotmail.com> wrote:
>On Thu, 27 Dec 2007 14:36:58 -0800 (PST), Tuco Ramirez
><tucodrat@yahoo.com> wrote:
>
>>On Dec 27, 4:50*pm, "John Weiss"
>><jrweiss98155NOS...@NOSPAM.comcast.net> wrote:
>>> "Tuco Ramirez" <tucod...@yahoo.com> wrote...
>>> > Does anybody know how to use a stand-alone power supply to provide
>>> > power to additional hard drives connected to the motherboard, in other
>>> > words these are not external hard drives with their own power supply.
>>>
>>> Why not just connect them to the main power supply, just as you connected the
>>> data cables to the internal bus cables? *If that is too small, replace it with a
>>> bigger one!
>>>
>>> Most people would get an external enclosure that comes with its own power
>>> supply, but it sounds like you didn't do that...
>>>
>>> I suppose you could buy another computer PSU and mount it outside the case
>>> somehow...
>>
>>That's what I am asking about! There is only so much power that the
>>installed power supply gives out, so I want a few hard drives with
>>their own power supply, but connected to the motherboard for speed.
>
>You coul dhave something like this but if you buy this you would have
>too much power...You may aswell just buy a more powerful internal PSU
>I upgraded to a 550W 2 months ago and was very cheap...
"Tuco Ramirez" <tucodrat@yahoo.com> wrote...
>> Does anybody know how to use a stand-alone power supply to provide
>> power to additional hard drives connected to the motherboard, in other
>> words these are not external hard drives with their own power supply.
>
> Why not just connect them to the main power supply, just as you connected the
> data cables to the internal bus cables? If that is too small, replace it with
> a
> bigger one!
>
> Most people would get an external enclosure that comes with its own power
> supply, but it sounds like you didn't do that...
>
> I suppose you could buy another computer PSU and mount it outside the case
> somehow...
> That's what I am asking about! There is only so much power that the installed
> power supply gives out, so I want a few hard drives with their own power
> supply, but connected to the motherboard for speed.
Exactly HOW are you connecting them to the motherboard? What kind of drives are
they? How are you mounting them? The best method would be an external
enclosure with an eSATA external interface and SATA internal interface to take
normal SATA HDs, with its own power supply. Get a simple eSATA backplane to
connect to one of your SATA headers on the MoBo.
"Craig Coope" <coope1999@hotmail.com> wrote...
>>
>>You coul dhave something like this but if you buy this you would have
>>too much power...You may aswell just buy a more powerful internal PSU
>>I upgraded to a 550W 2 months ago and was very cheap...
>
> Ooops...the link
>
> http://techgage.com/article/xg_magnu..._external_psu/
Note that the "600W" PSU is effectively limited to 485W continuous!
Plus, the only price I could find was over $160, which would buy a good internal
PSU...
On Thu, 27 Dec 2007 12:25:19 -0800 (PST), Tuco Ramirez
<tucodrat@yahoo.com> wrote:
>Does anybody know how to use a stand-alone power supply to provide
>power to additional hard drives connected to the motherboard, in other
>words these are not external hard drives with their own power supply.
Yes, I know how, but it depends on exactly what you want to
do.
Basically, you have two choices:
1) Manually power on these drives' power supply(s) every
time you start the system, or
2) Design it so that when you turn the system on, it
(nearly) simultaneously turns on the 2nd PSU.
Option #1 is easier. Option #2 is better to avoid hassle
later, every time you start the system.
There is one thing you should keep in mind. The second PSU
should have a common ground to the primary system PSU.
Beyond this, it depends a bit on what this 2nd psu is. Is
it a computer PSU? Keep in mind it doesn't have to be, it
could be some other kind of switching or even linear (but
linear would waste power), merely capable of the current the
drives require.
Next if you want to manually switch them on then if they
don't have integral switches you would wire that. Since you
have asked about what is a pretty simple and straightforward
thing (wiring a switch in an ATX system) I have to suggest
you probably should not be wiring AC power switches to
separate PSU.
The other option is run a mechanical or solid state relay to
turn on the PSU, powering this remote turn on circuit by one
of the main PSU rails. Another option is another ATX PSU,
grafting the two PSUs' Power-on lines together so the
motherboard pulls them both down when you press the case
power button. In this arrangement, there might be a chance
the motherboard would not pull the voltage down enough to
start either or both PSU, but generally it will work.
Power Supply For External Hard Drives 
Linear Mode
