i am selling a dell 1 of each of these. "Ps-5161-1D1", "PS-5161-7ds", "PS-5161-7d", "hp-l161nf3p" if you buy these new they are about $100 more or less so i figured 40 would be a good price for a used one. i used to work in IT and we had a few computers that the caps on the MB blew after 3 months so now i have 4 power supplies. YAY i have a power supply tester so if you want to see it working then i can show you it works. like in the picture they all test as good. but i dont have any computers that i can use them in so i cant show you it powering a computer. thanks jesse 530 721 0992 Location: old town it's NOT ok to contact this poster with services or other commercial interests newmexico