Can i upgrade my computer psu from 300 watt to 500 watt

[BBQBACONPotato]

I wanted to upgrade my psu from 300 watts to 500 but i do not know if my motherboard can handle it
My PC Specs
HP Envy 750-129 cb
Motherboard: HP 2B47 1.04

 

[Calvin7]

HP ENVY 750-100 Desktop PC series
HP ENVY 750-129c
I think the b is for black color
http://support.hp.com/hk-en/product/HP-ENVY-750-100-Desktop-PC-series/8499646/document/c04878343/

FSP 300W micro-ATX Power Supply
http://www.scan.co.uk/products/300w-fsp-micro-atx-80plus-80mm-quiet-fan-20plus4-pin-atx-203v-atx12v-psu
Dimensions:125 x 63 x 100 mm (WxHxD)

Check dimensions on these to see if they will fit:
http://www.newegg.com/Product/Product.aspx?Item=9SIA24G3RH5207

I don't see any unusual motherboard connectors for power. What fits the case may be a different story.