how to connect Sabrent EC-NVME (with USB 3.1 Gen 2 USB Type-C) to Mac Pro (2016) (Model: MacPro6,1 6-Core Intel Xeon E5 3.5 GHz) thru THUNDERBOLT 2?
I'm looking for the best, cost effective way to get the most out of the SPEED in the new NVMe type SSD (Samsung 970 EVO+) in the Sabrent EC-NVME enclosure that only has a USB-C interface on it. Is there a cable, adapter or dock that can conduct both the data transfer AND POWER to the enclosure while allowing for Thunderbolt 2 data transfer speeds, (or at least 10 Gb/sec?)
1 Answer from the Community
The Sabrent EC-NVME is a USB 3.1 gen 2 device so the max speed you could expect is a little over 900 MB/s which is a good portion of the theoretical limit of USB 3.1 gen 2 (9.7 Gbps considering the encoding overhead of 128b/132b but not the overhead of the USB protocol).
The best (only?) way to add USB 3.1 gen 2 to a Mac that only has Thunderbolt 2 is to connect a Thunderbolt 3 device that has two Thunderbolt 3 ports using an Apple Thunderbolt 3 to Thunderbolt 2 adapter. The second Thunderbolt 3 port of the Thunderbolt 3 device can be used for USB 3.1 gen 2 devices.
Some Thunderbolt 3 docks also have other USB 3.1 gen 2 USB-C ports. If they are based on the ASMedia ASM1142 (8 Gbps PCIe 2.0x2 or 7.9 Gbps PCIe 3.0x1), then you'll get slightly better performance using a Thunderbolt 3 port. I think they all use the ASM1142 because it only requires one PCIe 3.0 lane from the Thunderbolt 3 controller leaving three lanes for other controllers (usually two USB 3.0 controllers and one Ethernet controller but sometimes a FireWire or eSATA controller).
Check the Wire Cutter review "The Best Thunderbolt 3 Docks" for more info.
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