Wireless network card for Desktop

[dl8860]

So due to moving home, I now need wireless connectivity for my PC.

Just wanted to check, does this adapter fit into the smaller PCI-e slot on my motherboard?

https://www.overclockers.co.uk/tp-l...pci-express-adapter-tl-wdn4800-nw-057-tp.html

https://www.asus.com/Motherboards/M4A78LTM/

 

[dl8860]

I echo this.

I'd rather not have the extra cables running about to be honest. With the above network card, will I really see any noticeable drop in performance compared to a wired connection? Do homeplugs compromise a wired connection in any way?