Morket :
Is it safe to use a two pin plug PSU with a three pin adapter?
I purchased an EVGA G2 550W PSU from a UK online retailer however they are shipping a two pin PSU
Are you talking about the main power cable to the wall?
If so I highly recommend AGAINST using an adapter, and instead contact EVGA they can send you the correct power cable, or just go to your local computer shop they should have a proper power cable. The connection on the PSU is standard, and it switches internally for the voltage.