I did my research and thought that this would be a quality product. I bought this for the CF card reader, my computers have built in SD card readers. Right out of the box, the CF card reader didn't work. I tried with multiple cards, all of which work in my Cannon camera. SD card reader (which I didn't really need) worked at first, but in a few days, that stopped working also. I destroyed the packaging while opening it, so I didn't try to send it back. Wasted money. Maybe I should have gotten one of the 26 in 1 readers for $5 or so. At least if it didn't work, I wouldn't be so mad.