mark wrote:
My tablet needs 5v, 2A to charge via the micro usb but all I have is a
700ma walwart (which does not work) so I was thinking I could use my ATX
power supply. There are 2 rails on the ATX for 5v, one for 30a and one for
2a. Is there any reason I cannot use either rail? The tablet will only
draw the current it needs, right?

Yes, your supply can have infinite current and as long as the load only
draws 2 amps then the supply just happily idles along.

Now, some switching supplies require a minimum load to boot, but most of
the ATXs will power up (even with a tiny load) if you short the correct
control lines.

John :-#)#

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