These are my adapters. The one on the right is for USB 3.0, and the USB is for SD HC cards and a few other cards, too. I use the SD card for printing pictures of documents. The hplip drivers will only print out a test page. I save documents as PDF’s or export them as pictures depending on how many pages they have. Multiple pages need the PDF extension, and then I use Gimp to export each page as a picture. I guess I just need to replace this free printer instead, but I already had the USB 3.0 express card; and the other parts weren’t much more.