William
I bought this to use on my tablet (an Asus Transformer TF101) to backup some of my data before I flashed a custom ROM. Works as expected out of the box; no formatting or fiddling needed. It comes with an SD card adapter and a little plastic case for it and the adapter. Android and the recovery kernels I've used have no trouble detecting whatever the default filesystem is on it.The one thing I would note: if you have an older SD card reader on your computer, it may not be able to read HC or XC micro SD cards. You may want to check if your read supports them.I recommend this to anyone who needs a SD or micro SD card for any purpose. It's cheap, tiny, and has massive storage capacity for it's size, so long as your device supports it.