Can be installed in 2018 10.1 nook slot with option of external or internal memory. As internal memory, extends on-site capacity before transfer to external or cloud memory. Cloud memory requires availability of wifi, which, if public, exposes unit to intrusion.

The item arrived on time. When I put the micro SD card into the included adapter and inserted it into the memory card slot of my PC it was not recognized. Disk Management also failed to see it. I returned it to my local Walmart the next day. I am still waiting for the refund to be credited to my account.