The USB 3.0 Dual Slot SD UHS-II and CF Memory Card Reader from Delkin Devices can transfer data from Compact Flash and SD cards to your computer simultaneously via USB 3.0. The USB 3.0 interface can download data at speeds of up to 500 MB/s, ten times faster than USB 2.0. If your computer does not support USB 3.0, this card reader is backward compatible with USB 2.0 and 1.1, but transfers data at a slower speed. Delkin added a second set of connectors to the SD slot to improve speed and performance while maintaining backward compatibility with non-UHS-II cards. The other slot reads Compact Flash cards that support UDMA 7 and VPG. The Delkin memory card reader is plug-and-play compatible and provides a fast way to read and store video, images and more on SD and CF cards.