There are speedy flash drives, and then there’s the SK Hynix Tube T31 that’s currently on sale for $80 on Amazon, down from its usual $135. Unlike a flash drive, though, this thing is actually a fast 1TB portable SSD that just happens to look like a flash drive. We reviewed the SK Hynix Tube T31 a while back and loved how well it performs. We gave it an impressive rating of 4.5 out of 5 stars along with our Editors’ Choice award. Our expert reviewer appreciated the speed of this device, its small form factor, and its affordability. While this model may cost a bit more than a regular 1TB flash …