This Corsair AX850 power supply is a dependable choice for any computer system. Featuring one fan for cooling and compatible with a variety of models, this power supply will keep your computer running smoothly. It is perfect for those in need of a reliable replacement or an upgrade to their existing system. With its ability to deliver stable power, this power supply is a must-have for any computer enthusiast. Yes, this might be a used Power supply but I assure you that is turns on. It’s a 850W power supply, it will work fine. Obviously it the dust will be cleaned off. It will be lookin almost brand NEW!!!! This power supply is taken apart from a Master Cooler pc that still works but is just missing some parts for it to actually turn on. Let me tell you a story, one day my father found this old pc on the ground where he works. I suppose someone must of tried throwing it away, but anyways weeks later we searched it up and we figured out what it was missing so we went to my uncle’s house because he wanted to try to turn it on by putting some of his pc parts from his computer into mine, and unfortunately it worked it turned on and everything. It had red LED lights and worked fine. End of the story???