[Q](I86)External devices and A2 mode?

[Neru]

Good evening,
I've got two questions-
First one is- has anyone succeed to connect external devices like graphic tablets or other stuff via USB? If yes then did You needed to use external power source? Also someone in forum mentioned that Onyx has removed USB handling in later firmware- is it true and can it be why wacom tablet does nothing when connected to reader?
Second question would be- someone at Chinese box forum posted a video that shows I86 playing a video. Can it shorten lifespan of screen? At eink.com data sheet it says that e-ink pearl screen service time is 10 million times but does it counts if its A2 mode?