The card requires only a single 6 pin pcie power connector.
That will be present on all 450w power supplies of decent quality.
However, I might suggest something stronger that can handle a future graphics card upgrade.
A 600w psu can support a graphics card as good as a GTX1080ti.
I have no problem overprovisioning a PSU a bit.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.
Whatever you do, pay a bit more for a quality unit.
My suggestion would be a Seasonic 650w gold focus for $90
It is very highly rated, and has a 10 year warranty
The 550w version is only $10 less.
https://www.newegg.com/Product/Product.aspx?item=N82E16817151186