I moved the 64gb memory card from my Surface 2 to the 2520. It had seen previous duty in my Surface Pro. Both devices showed perfect results. I formatted the card after inserting it into the 2520, and set the default saving location to the card for music, video, and pictures. I saved about 20 pictures onto the card, and placed them in a subfolder. After a day or so, during which I rebooted at least once, the pictures are gone. I repeated the process yesterday, and today they are gone again. I just repeated the process, but instead of saving them in a subfolder, I saved them in the default picture folder. (Yes, the original subfolder was in the default pictures folder) I'll keep checking to see if the problem is the subfolder, but has anyone else run into any problems like this? Keep in mind, this card worked perfectly for a year in two different devices.
Card in question: Amazon.com: SanDisk 64GB Ultra MicroSDXC Class 10 Memory Card with SD Adapter - Retail Packaging: Computers & Accessories
Card in question: Amazon.com: SanDisk 64GB Ultra MicroSDXC Class 10 Memory Card with SD Adapter - Retail Packaging: Computers & Accessories