1. It most definately uses MicroSD/TF. It says up to 4GB on the spec and that is the smallest SDHC so it must support it. I don't have a MicroSD larger than 2GB right now in order to test it. It very well could support larger SDHC and further testing is needed.
2. I installed all of the apps on the SD card - so yes.
3. It has 10 levels of brightness controls from the control panel of WinCE.
4. This looks to me like a US adapter but I'll pose this question to the supplier and see what the response is.
5. I didn't see any firmware updates on the JoinTech page, so I'm guessing this is the latest. It worked perfectly with ActiveSync out of the box, although there are USB drivers in that eBook Documents link I put in the review (Supplemental Links). I didn't have to use the drivers for some reason. I'm guessing it is because it uses the same driver as the SmartQ7 and I had that already installed?