Well as most every power supply has all +12 volt leads connected to the same land on the PC board (single +12VDC supply) and since that label shows 4 legs each rated at 28A, something does NOT add up. 4 X 28A is 112A, not 62A as the label says.
That indicates that not all legs can be maxed out and that any individual leg can supply 28 amps but at the expense of the others for a TOTAL of 64A