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power a controller board via USB 12V/5A

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chenks:
so i've ordered a little controller board to run some LED strips (it works with Philips Hue but for a fraction of the price).
it requires to be powered 12V/3A(or 5A for longer strips).
i don't fancy having it plugged into the mains, but then though maybe i can power it via USB using the yellow USB charging port on my NUC server that is sitting next ot where it'll be located (yellow denotes a powered USB port for charging)

the controller board has a barrel type connector, so had a google and came across this - https://www.amazon.co.uk/gp/product/B01G56J4I6

should this work?
has anyone done anything similar?

[Moderator edited to simplify the link.]

chenks:
on digging a bit deeper it only gives out 0.45A, so that's knocked that one out.

Ronski:
I was just going to say that a USB port will not supply 5 amps, but you've discovered that.

It should be very easy to purchase a suitable supply, which will of course have to plugged into the mains - as is your NUC.

I have recently purchased some 24v 10 meter long RGB strips for a garden project, but I haven't progressed much further yet.

chenks:
for the short length of strip 3A should be sufficient, 5A is only recommended for over 5 meters.
i have found some that will do 2A - https://www.amazon.co.uk/kenable-Power-Cable-2-1mm-2000mA/dp/B00SCBAE00

indeed a suitable mains supply is easy, but was hoping to keep it off mains if possible.

[Moderator edited to simplify the link.]

Ronski:
But what is off mains? My cryptic point was that even your NUC is mains powered. You could of course use a 12v battery and recharge it via solar power.

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