I tried to use my 64 GB Thumb drive.
When inserting drive, the drive's light flashes.

USB storage is checked "on".

Astro cannot access or read the drive.
It gives me a message "Directory missing", when I tell it to create the directory is cannot do it.

Drive is FAT 32.

Is there a 32 GB limit with Honeycomb for SD and USB drives?

Another Forum suggested ES File Explorer.

Downloaded it and it reads the USB thumb drive.

I really like Astro but ES seems better and it works.

again, lenovo kind of dropped the ball when they do not supply a file manager and other windows like utilities and apps..