Great Product!

I can't tell you how useful this little guy has been for me. I'm a huge Pocket PC fan and am constantly putting stuff on SD cards. What is so wonderful about this product though is that it not only will read from a traditional SD card but it will also read a SDHC (Secure Digital High Capacity) Card. These are becoming more frequently used and not every card reader out there will read them. It also reads a ton of other cards. (SD, miniSD, microSD, TransFlash, MMC, Plus, RS, DV)
I just love this product. The one immediate down side that I see with it though, is that is a bit more expensive than most other Card readers. (around $25)
There is a light on the back of the reader that blinks when it is sending or receiving info with the computer so you don't accidentally pull it out mid transfer.
One other thing... don't lose the cap. It doesn't stay on very well unfortunately. I lost mine in about 15 minutes. ;(
The product comes with a plasticy slash rubbery thing that covers the holes that read the cards. It doesn't like to stay covering though. This recently broke off of mine. (After about 8 months of use.)