Amazon doesn't provide compatibility information on this product,so here it is:- it works only with Windows (98 and up)- if you don't install Addonics proprietary drivers, only CF slot will work (even Addonics tech support wasn't sure about that!)- basically, you have to install their drivers if you want to be able to use it- NOT COMPATIBLE WITH LINUX or MACAddonics had a good idea with interoperable memory card readers but failed to make it compatible with standard USB mass storage driver. The need for additional drivers makes it unusable anywhere else but in Windows and it's a common knowledge stability of Windows greatly reduces with additional installed drivers and sw.Due to lack of compatibility and flexibility I don't recommend this product. Amazon has done a poor job in documenting this product, I had to return it! BEWARE, you can't return it once you opened the package!