Quick Fix: 4GB Mac OSX to Android File Transfers
Both Linux and Windows have no problems transferring files to Android devices over USB. Mac OSX, on the other hand, has a 4GB file transfer limitation when using the Android File Transfer utility. If you're an Android or Windows Phone user and want to transfer files that are larger than 4GB to your tablet or smartphone using Mac OSX, you can use a generic micro-SD card reader to work around the limitation.
Power down your Android or Windows device and take out the micro SD card. Insert the micro SD card into the adapter and plug the adapter to your Mac. You can then start transferring large files unhindered by the 4GB limitation.
A 64 GB Samsung micro SD card mounted in Mac OSX using a generic micro SD adapter
Manufacturers such as Samsung and Sandisk will be releasing micro SD cards with storage capacity exceeding the 128 GB and 256 GB products available in the market now. Moreover, in the next few years newer Android and Windows devices, including budget models, will start providing full support for these large capacity cards without a hit on performance. It would be a shame if Mac OSX users who aren't iPhone users aren't able to take advantage of generous storage due to file transfer limitations, so a micro SD card reader could prove handy.