Property me this card reader risen since my old device barely opened media and despite USB2.0 was quite slow. In this exactly the opposite! With a CF card from Sandisk (SanDisk Extreme III CompactFlash (CF) Memory Card 8GB) I reach under Windows7 loose 16mb / s down Copying mixed Jpeg and RAW files. Writing about 12MB / s (same file). The sliding mechanism is ne good thing, you can just leave the card stuck and goes simply with a, so you have to have no concerns during transport. A nice bonus, I can read out the microSD card from my phone now, without extra adapter. So as a whole a super product for narrow checkout.