2-in-1 TF Card to SD Card Adapter+ USB Card Reader - White

Pros: It's compact (size of a standard sd), adds much more flexibility when using it on any compatible camera; allows use the same microsd cards we already have on smartphones, cameras, notebooks and even desktops via usb interface. It's fast, I got 40 MB/s on read of SDHC class 10 U1, so the adapter is not be the bottleneck on this class of sd cards

Cons: It does not attach very firm when using the usb mode, due obvious limitations

Other: It's a great adapter, I never seen anything better for this purpose. Already bought 3 of them.

Pros: It's perfect for digital cameras, replacing the SD card and the reader and at the same time.

Cons: On Linux is not recognized as "mass storage", but as the card itself, which may not work on older kernels.

Other: Already in use two cameras for months and never had problems. The best of this adapter is the size, unlike some others that are a bit smaller, this is the right size, making it easy to put on the computer and the camera.