The MicroSD USB card reader included with the EDGE works perfectly fine, at least mine does.
What I don't like is that the MicroSD sticks out past the card reader, so you'd have to stick it in your USB port by holding the sides.
It's a problem for me because I have one of those laptops that have the USB port in a horizontal way, not vertical.
What I'd like to confirm is whether or not this USB card reader is compatible with SDHC. I recall a online store, I believe it was leetmod, that said it is SDHC capable. I've not tried that yet, don't have a SDHC card sadly. Anyone care to let us know?