I realize it's been more than a year since this message was started, but I thought I'd add to it since I was trying to find the answer to this very question about this very power supply, and didn't really get a solid answer here. So I just bought one and fiddled with it! Here's my experience:
It's the Power One power supply SP-637 or PS-637 (depending on which part of the All Electronics website you are looking at.) I connected a windshield wiper motor (for a Halloween prop) to the +5V and GND pins, which are clearly labeled on the board, and plugged the PS into the wall outlet. The motor worked fine, and I did not use the sense pins.
I also tried disconnecting and re-connecting the motor without unplugging the PS, since my Halloween show will turn the motor on and off. A different switching PS I bought has a one second delay before providing power when this happens, but with the PS-637, there is no delay in the motor starting, so I assume no continuous resistance load is necessary to start up the PS.
Michael
PS. I haven't seen it mentioned before, and I had to research, so I thought I'd mention: the ACL and ACN pins refer to AC Live (narrow plug blade) and AC Neutral (wide plug blade.)