Local storage on Chromebooks is minimal and in some cases it’s too little. You can stream videos and music from the cloud but that’s not practical when you’re on the go so you’ll need a lot more local storage if you want to listen to a good music collection or have a wide choice of videos on planes, trains and automobiles. Some Chromebooks can be upgraded and the C720 is a great example as we found when we  we dropped a large SSD into that  but what if you don’t want to open up the back of your Chromebook or what if there’s no possibility of doing that due to soldered eMMC storage as found on many Chromebooks now? You’ve got two options. An SD card or an external drive.  We’ve completed testing some very fast and lightweight USB 3.0 SSD solutions from MyDigitalSSD that might just be perfect for your Chromebook.