I got this as "freebie" with a 16GB card. Mine has the red "working light", which is handy to remind me I've got a removable device attached.
Vista reacts a bit strangely to it with requests to "insert media", but if you ignore that (like you ignore most of Vista's overkill granny messages), it works fine as a removable drive. (I don't swap cards when it is in the laptop, so don't know if that in fact works.) Mostly use it with the same card in it.
Seems to be quite fast and reliable.
However, like others, I'm a bit queasy about the construction: the plastic case is extremely thin; if you even lightly pinch the case in the middle over the circuitry, it gives and "crackles". The edges where the caps fit and card is inserted are also very thin and look like they'd be easily chipped.
The caps are easily lost/misplaced (I've had to search through the covers when using laptop in bed and absentmindedly put cap down on the bed instead of night table. Thankfully, I don't have a cat, which would probably think the cap was a great toy.) Also the caps pull off very easily; I keep the device in a small pocket in my laptop case, and sometimes the cap comes off when I pull the device out and it happens that I've only got hold of the cap.
I also tend to try to insert it in the port upside down half the time.
And it was just shipped in a light bubblewrap envelope, little protection considering how the thing probably wouldn't survive much pressure on the sides. Like other reviewers, I'm not impressed with the shipping practices.
I might get another if it were a freebie again, and the shipping & handling weren't outrageous.
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