20 Mar 2018 this manual is subject to change without notice. No part of When calling for support, have all information at hand prior to calling. To contact . AJA Io 4K Plus offers a full set of professional video and audio connectivity with Three retail packages are avail13 Jun 2017 All information in this manual is subject to change without notice. No part of When calling for support, have all information at hand prior to calling. To contact AJA . Table 1. Io 4K/XT Feature Comparison. Feature. Io 4K Io XT.