Does anybody know if these power supplies have a soft on/off connection inside like the green wire on a computer power supply?

I want to turn one on using a low amperage contact (not for a printer but another project) I know I can do it with a relay, I just wanted to know if these possibly have an internal connection that would be similar to those on a computer supply that only take milliampere switch to activate?

Thanks!

Link?

[www.ebay.com]

I think I will just use a relay.

If you can find the schematic, I can hack it to have that feature. Since it is a switching power supply, this modification is possible.