To test the Inspiron's USB 3.0 bandwidth I used the popular Samsung 850 EVO plugged in via a SATA to USB 3.0 adapter.
Results from CrystalDiskMark 5.1.1 and ATTO Disk Benchmark 2.47 have the Inspiron's USB 3.0 bandwidth slightly below where I hoped it would be. 400 MB/s would be a decent speed, as the theoretical limit of 640 MB/s is not realistically achievable, but the Inspiron tops out around the 280 MB/s mark.
It is good to be uniqe they say but why you are you using that many pages?
Besides that good review and nice product