The ProMaster reads and writes to virtually all Secure Digital and Memory Stick formats. It is: + Easy to use. Simply insert a memory card into the reader and it appears as a drive on your computer. + Tiny. With a minimal footprint, it takes up little space on your desk and fits easily into your camera bag or pocket. + Fast File Transfers. Fast and easy way to transfer images, music and other files from your memory card to your computer. Uses USB 2.0 for lightning fast downloads at up to 480Mbps.