[ale] power sw, reset sw, hdd led cables/wires too short

[Stephan Uphoff]

On Sat, 2005-04-23 at 09:03, Bob Kruger wrote:
> I've had this happen a number of times.  It really only takes a couple
> of minutes to clip the wires, strip the insulation, and splice in
> extensions.  To splice, I have used just a simple twist, fold and tape,
> crimp type connectors, and solder.  Because of the low voltage any minor
> resistance added is insignifigant.

P = R * I^2

Power lost at the connection is related to the current and has nothing
to do with the voltage.
However low voltage systems need more current for the same power
(P=U*I).
Because of this a little bit of added resistance is actually less of an
issue in high voltage systems. (Think high voltage overland power lines)


> Just make sure you do one connector at a time, lest you cross wires.
> 
> V/r
> 
> Bob
> 
> Steven A. DuChene wrote:
> 
> >I am assembling a new server for my lab out of parts and it has an unusual
> >dual processor Intel mother board. I am putting it into a nice 2U Supermicro
> >case but the connector cables/wires for the front panel switches/indicators
> >(power sw, reset sw, hdd led, nic led, and etc) in the Supermicro case are
> >just too short since the connectors on the motherboard are on the opposite side
> >of the case from the switches/led/what-not.
> >
> >I have had this problem on other motherboard installations into various cases.
> >Has anyone ever seen a nice set of extension cables/wires for this sort of problem
> >sold anywhere? I cannot possibly be the first with this problem and I am not wild
> >about cutting up the wires in the Supermicro case to add a little to them so they
> >will reach. I have done that in the past and it just ends up looking really ugly.
> >--
> >Steven A. DuChene
> >_______________________________________________
> >Ale mailing list
> >Ale at ale.org
> >http://www.ale.org/mailman/listinfo/ale
> >
> >
> >
> 
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
> 
>