Okay so, yesterday i bought a Corsair 500 80plus smps and my old one was cooler master 500wtt. My new pc was working fine with the new smps. But, when i shut down my pc for long time and then press the power switch of my cabinet, nothing happened (the led on my router which denotes ethernet connection from router to pc, lightened up for two seconds and then turns off again). So i swap my old psu cable with the new one, and it worked fine. My new smps have a 16a plug but the old one doesn't. Again, i tried to use the new smps cable making sure nothing is losen up, and turn on the pc, it worked again 🙂. And failed to work for the second time just like the first time, so i had to swap the cables again. Please tell me can i use the old smps cable?