My wife is disabled and is pretty much bedridden. Several years ago I got her an Ipad 1. I know nothing about Macs and very little about Ipads. What I want to do is scan all of the documents she has tossed all over her bed into the Neat Desk Scanner that we already use on our PC. I know that getting a PC to interact with the Ipad can be troublesome, so I want to get an older Mac to scan her documents into and use as her server just for the Ipad. My router can handle two channels so I was going to dedicate one channel for the Ipad and Mac only. What I need to know is what is a good version of Mac to just be a support computer for her I pad and to store data for? Thank you very much.