I bought a Super Flower 750W PSU the other day and was a bit confused that it came with a Type F 16A 250V European 2 Pin plug? I had a spare adapter lying about so I plugged it into that but the PSU wouldn't power on. I swapped it out for my old PSU's power cable which is a standard UK plug with an IECC13 female end and it's getting power now, but how come it's not getting powered via the cable it came with??