I was about to post it. I just check the PSU and it says "Change Voltage Here". I'm a noob
I have to go buy a multi-tester or borrow it
......Does it have a + and - marking on each side of the trim-pot? If it does just turn it all the way down and you will be good since thats where you want to run it at...If you can borrow one later and check it would be cool so you'll know exactly what the V is running...