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Both these interfaces are USB 3.2 Gen 2, allowing the best speeds irrespective of which interface is being used. Very fast speeds: Thunderbolt 3/4 compatibility allows for very fast read/write speeds up to an advertised 2,800 MB/s. I test speeds below.
The Envoy Pro SX is very portable at 4.5 inches by 2.75 inches by 0.6 inches. And it’s surprisingly hefty for its size, coming in at just over half a pound.These scores were in line with our expectations, and running them repeatedly revealed a variance of around 50Mb/s between the best and the worst in each test. The competition The Sabrent option doesn’t have the same IP67 rating as the Envoy Pro FX and is exclusively for Thunderbolt ports, but the performance levels are comparable for significantly less money. On our test system under CrystalDiskMark 7 a read speed of 953MB/s and write of 966MB/s were recorded, and these results were generally supported by AJA System Test, ATTO and AS SSD. It should be noted that if you only have a 5Gbit USB port as per the original USB 3.0 or USB 3.2 Gen 1 as it has been relabelled, then read and write speed will be below SATA SSDs, at around 450MB/s.
Very conveniently for those looking for benchmarks, OWC has a wide selection of tests that they have performed on PC and Mac to show the speed of this unit. The bottom of the drive has two non-skid rubber feet to prevent it from sliding around on a desk or other surface. On the front of the drive is a slim LED status light that appears blue when the drive is powered on and flashes slowly during file transfers, but the LED isn't very bright, so I found it pretty useless during daylight hours. (I'm no pro photographer, so the picture above makes the LED look brighter than it is.) With a sleek aluminum housing, the Envoy Pro FX resembles an Apple product, but the white OWC logo and Envoy Pro FX branding takes away from the aesthetic. The drive's "charcoal gray" color is a bit darker than the Space Gray finish of the MacBook Pro, but they still look nice side by side. Along the left and right sides of the drive are what OWC calls "deeply grooved fins" to help with heat dissipation and ensure sustained performance. The fanless drive never felt overly hot to the touch during some large file transfers in my testing.The OWC Envoy Pro SX can handle both. At up to 2847MBps, it’s about as fast as an external SSD can be. And it’s rugged so you don’t have to baby it. Hardware and design
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