You can plug any PC device directly into your Router, or you can connect by wifi. My trusty old desktop doesn't have a wifi card, and its on a different floor to the router. So purchased a wireless Nano USB adapter :::
Amazon.co.uk User Recommendation
This has to be the bargain of the century ! It effectively gives my desktop exactly the same connecting ability, as if it had a wifi card, or if I had moved it downstairs and connected it with a cable directly to the Router. I get download speeds of about 38 mega pixies on any device I use the Router for, whether its connected by cable or by wifi. My DEsktop doesn't seem to working any slower therefore.
Jst connect your Ipad or anything else by wifi in the normal way, and you won't go wrong !