What's the wattage of my PSU?

I Just Bring A new Cabinet with psu the shopkeeper says dat it has 450watt power supply bt I doubt it n I chckd bt I didt find anything there can u plz tell me how much I have m aataching screenshot below
 

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I'm calculating 360W's from the figures in the photo. Unless those figures are incomplete or inaccurate, there is no way that PSU can deliver 450W.
 
Volt * Amp = Watt

Multiply the voltage by the amperage for power output in wattage. Then add up all the wattage values for a total power output.
 
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