Question as stated in the title. I haven't found a review yet that is any more specific than "It has USB-C, it's not Thunderbolt 3". Based on the absolutely silly $400 price jump to go from 256GB to 512GB (and that is literally the only difference) I decided to go for the 256 GB 15" model as the best value. While I'm waiting for that to arrive I'd like to get a good external SSD to run some VM's and other programs for my degree, but don't want to spend more on those than what the technology can support. Has anyone tested that port yet?