Miracast compatible HP Lappy advice needed please.

[Big Al.]

So just purchased a new HP lappy that is Miracast compatible, it's due for delivery tomorrow, in the mean time I've just purchased one of these

http://www.amazon.co.uk/gp/product/B00ZWOU5R2?psc=...

I primarily want to cast/stream movies from my lappy to my TV.

Does anyone have any experience using one of these?

I'm not that IT savvy so please be gentle with me.

TYIA

[Big Al.]

Got the lappy today and it's currently being configured and files transferred from my old Lappy, Both new and old lappy run on Windows 10, if your saying that you've read that it wont run on W10 then I'll ship it back and get one that does.