Re: Apple II Memory Expansion Card

["David Wilson" <mcs6502@gmail.com>]

Henry (.a.t.) wrote:
> mentioned it called the '5v Stand By' supply.  On PC's it's just meant to
> provide enough power for a few LED's and some low power circuits to turn the
> computer fully on.  I can't see it being more then one or two hundred
> milliamps at most.  I'll look in to it though.  Good idea guys!

The current rating of the +5VSB rail has increased on ATX power
supplies over the years - now they tend to be able to supply one or
even two Amps @ 5V. This is so that Wake On LAN and Wake on Keyboard
functions can work. Some examples from motherboard manuals:

Abit BP6 - requires 720mA to support Wake on LAN, Keyboard or Mouse
ASRock K7VT2 - requires > 2A to support PS/2 or USB wake up events