Bought a number of these for a small business, working great so far - both with Windows and Mac machines.

Handy size. Bit finicky to get it to read mini-SD cards, though (which was the main reason I bought it) - sometimes the device has to be plugged into my laptop first, and then the mini-SD plugged into the device before my computer can detect the latter; but at other times it won't read the mini-SD unless it's plugged into the device, first, and THEN afterwards I plug the device itself into my laptop.

Delivered quickly and the standard was great for what I needed it for.

Works well. But I was weirded out by how the way the SD and microSD cards insert in opposite ways.

It works flawlessly.

Works great