Original USB HUB and HDMI adapter for Gemini PDA are really expensive. Maybe it's interesting for Planet Computers fans, but for those, who just bought a good device for using it, there is no need in purchasing original devices just because of Planet Comptuters logo on it. Especially, if there is a lot of cheaper analogs around.
So, I start this topic to post here reports of experience with using such third party devices with Gemini PDA, to help others choose a device they need.
Please, post model names, links to the pages with description or where it could be purchased with your experience how it works with Gemini PDA.