Ipad Model A1474 Air 1 Or 2. This model is more than enough. The cellular capable iPad Air 2 model -- the iPad Air 2 Wi-FiCellular also includes support for more LTE bands than its predecessor.
Apple ipsw ipad air wifi a1474. The iPad Air Wi-Fi Only A1474 supports 80211abgn on both the 24 GHz and 5 GHz frequencies dual band as well as MIMO. Jeff Suovanen and 3 other contributors.
However the original iPad Air models only support dual stream 24 GHz and 5 GHz 80211n Wi-Fi MIMO whereas the iPad Air 2 adds support for faster 80211ac HT80 with MIMO.
I bought an iPad 2 then traded up to an Air when they first came. 16 32 64 and 128 GB. 1 st Early 2014 WiFi Cellular China A1566. A7 chip with 64-bit architecture and M7 motion coprocessor.