The delkin usb 30 universal card reader is the ultimate card reader for transferring large files to your computer in just a matter of seconds transfer two hours of hd 1080p video in 26 seconds almost 10 000 images in less than a minute or 2000 mp3 files in less than 13 seconds delkins usb 30 universal reader delivers complete backward compatibility with usb 20 and usb 11 making this the ideal accessory for all your data management needs once you have inserted a memory card an led light