To transfer files from an SD memory card to a computer, you’ll need an SD memory card reader. Most laptops have built-in SD memory card readers, so you can simply insert the card, and the operating system will recognize it as local storage. If your computer doesn’t have a built-in reader, you’ll need to buy a USB card reader, which turns any existing USB port into an SD memory card reader.If you buy a WiFi-enabled SD memory card, follow the manufacturer’s instructions for transferring content from the memory card to a device over your WiFi network.