Slim and easy to carry, with the High Speed USB Micro SD Memory Card Reader you'll never have a problem transferring and backing up files easily. The High Speed USB Micro SD Memory Card Reader supports high speed data transmissions up to 16mb per second (read) and 8mb per scond (write). Simply insert your microSD or microSDHC card (not included) into the removable card reader, pop it into your USB port, and you're ready to go! The High Speed USB Micro SD Memory Card Reader even has an eyelet for the included lanyard, making it easy to attach to your phone or keychain. Phone Compatibility: 1GB / 2GB / 4GB / 8GB / 16GB MicroSD or MicroSDHC CardsOther products from A4C