Slide the card into the reader until it sits snugly. Labels usually face up, and gold contacts should face down or toward the internal pins. 2. Connect to Your Device How To Use SD Card Reader On Android - Full Guide
If the reader is working but the files are not opening, your computer may not be able to read the format of the card. Be careful if your computer asks you to the disk. Clicking "Yes" will erase all data on the card. Always back up photos to another location before formatting a card.