|Apparently that thing comes with a micro SD slot--like most phones have--so if your Sandisk is a micro SD then it should fit OK. If your sandisk is a regular USB flash drive, you're out of luck as I don't think there any adapter for that. You'll just have to go out and buy a micro sd card.|
If you've got the micro sd card but can't get it fitted in the slot here's a google search with general info:
(It's late and I don't have time to sort through it all to find the best one).
Or if there's some non-standard way the Nook uses to install it that should be covered in its owner's manual.
Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide. Better hurry. They're picking and shipping now.