This is very cool and I would have loved to have something like this. Heck, I would probably try to buy it right now if my computer had a floppy drive.
idk how the 360 blocks ones works, I guess you probably have to move a little switch or something on the mem card since most games won,t show more than 15 blocks, but I heard they can corrupt and all.
Basically, the 360 block is like having 24 memory cards in 1. Heres the one that I had.
The buttons are used to switch between the different memory cards and you can see which memory card you have it on in the digital display.
I never noticed any of my files getting getting corrupted, but mine did seem to randomly reset itself every once in a while, and I could never figure out what was causing it. I don't know, maybe the one that I had was defective, but I would advise against getting one these as this caused me to lose hours of work on songs and game data. And chances are, if you do get one, in the end you'll probably take a hammer to it like I did mine.