Alternative router to Kingston Mobilelite G2

So I’ve already got a Kingston G2 but it is currently turning an ethernet cable feeding my garden office into a wireless signal. Now I have another OP1 I want to free it up to use getting my tape tracks, patches etc on and off my iPad. So now I need to purchase a router with an ethernet cable as an input.

Just tried to buy a router from ebay to do this task and ended up with one that needed a phone cable, not an ethernet cable! I’m pretty hopeless at computers and confuddled by all the terminology (LAN / WLAN / ADSL / etc) - SOMEONE PLEASE HELP!! What is it I should be buying?!

pls how did you solve this matter ? I would like to transfer data between op1 and ipad air 2019 and looking for best option on how to achieve it.