- It cannot be plugged into a router. It must be wireless.
Apple removed the "Join a wireless network" functionality of the TC long ago.. it was so bad none of the regulars here would recommend you use it anyway.
- I have no desire to extend my existing wireless network or create a new network. I just want it to join my existing network, which runs off a TP-Link Archer C9.
The problem is you want your cake and eat it as well.. if you are not prepared to use ethernet.. what about EOP adapters.. they solve many of these problems and work well in some circumstances. Be aware not all.. so return should be possible. (if you are in Australia.. officeworks is great..)
Or what if the TC is stand alone.. why do you need it connected to the network at all if you are not prepared to plug it in??
One way around the problem.. cake and eating..
Put a wireless bridge in front of the TC.. and plug that in by ethernet to the WAN of the TC.
You should note speeds over this sort of mess tend to be poor and for media streaming poor wireless speeds mean disaster when playing videos.. !! 😠
How are you going to play videos from the TC.. because an Apple TV cannot do it.. !! 😮
If you plug a hard disk into your C9 it will offer full DLNA functionality... !! 😎 Or so they claim.
http://www.tp-link.com/lk/faq-340.html
IF you need details just ask..
EOP adapters ... maybe $100 for TP-Link ones.. good as any.
A wireless bridge can be done by airport express but that is expensive unit cf the cheaper end TP-Link routers that have this functionality..
http://blog.jeffcosta.com/2011/09/29/create-a-wireless-n-bridge-with-2-inexpensi ve-tp-link-routers/