The BOOX MAX 2 sadly doees not expose its full native resolution through the external monitor interface which is a real shame. Worse, none of the supported resolutions are integer fractions of the native resolution so scaling artifacts are unavoidable. It doesn`t even seem possible to sacrifice some border area and use a suitably-sized subwindow of the screen (e.g. FHD 1920x1080) without scaling. (If somebody knows better, please leave a comment) Onyx pretends there is no problem and cheerfully tells frustrated users to adjust their OS theme and font sizes, over and over again [1]. Shame on them for ruining what could have been a great and unique feature. because wouldn`t it be for this problem, the MAX2 would finally be a decent sunlight-ready external laptop screen, at least for text writing and some light coding. Well perhaps the problem is solved in the new MAX3 device.

[1] http://bbs.onyx-international.com/t/max2-hdmi-not-useable-wr...

Technology Connections (amazing Youtube channel btw!) has a few videos on using an Onyx Boox Max as a 2nd monitor:

https://www.youtube.com/watch?v=ytpRnRke6I0 (Intro)

https://www.youtube.com/watch?v=7NfX0vlCa4k (2nd channel longer look, mini review)

https://www.youtube.com/watch?v=D38dcArwCNc (6 months later, tips / tweaks / long term review)

No I use it as a pdf reader.