Hi. I just got an ASUS TF300T with dock and have spent some time messing with it this weekend. Really fun - but I still don't know much operationally. Got a bunch of apps from Google and Amazon so it's off to the races! I read here about a 128 G SD card for the dock so I put one of these Amazon.com: SanDisk Extreme 128 GB SDXC UHS-I Card (SDSDX-128G-AFFP): Computers & Accessories on order - but it won't be here 'til Friday, Other than that my tablet has 32 G ram and a 32 G micro SD - no storage in the dock yet. My only wish - for now at least - is that GIMP was ported thru to these tablets. I'm hoping that "they" will work on that soon.