High performance portable storage is becoming more affordable and rightfully so. Being someone who works with 4K video having fast portable storage is important. Not only when I am traveling, but when I want to transfer files between two different machines. SanDisk’s latest Extreme Portable SSD gives you up to a 1TB capacity, rugged design with an IP55 rating, and read and write speeds of 550 MB/s and 500 MB/s respectively. Could this be the best portable solid state drive we’ve seen? Read on as we find out!