TL;DR: This unit appears to work as advertised in a simple test. Flipping the data cable doesn't slow the device down to USB 2.0 like other adapters do. I bought a set of this "Upgraded Electop USB 3.1 GEN 2 Male to Female Type-C Adapter (2pcs), which supports 10Gb/s bi-directional charging and data transfer. Transfer, USB A to USB C 3.1 Converter (Black) " and received it on April 1st, 2021. Since the reviews are mixed I decided to give it a try. I was not paid to test them, nor does the product manufacturer know that I am doing so in advance The Device Under Test - Macbook Pro 2017 External SSD Drive USB-C to USB-A Adapter that supports USB 3.1 (note, not 3.2) and these adapters. I first tested the SSD connected directly via a Thunderbolt cable, me 630MB per second. I then connected the SSD via a Thunderbolt cable to a male Type-C female adapter and then via a USB-C to USB-A adapter to match the cable type back to the Macbook Pro. This setup actually forced the data connection through the electop adapter. In theory, this combination should only have a negligible effect on speed. I haven't noticed any reduction in speed when running the SSD directly from the Thunderbolt 3 port on the Macbook compared to the speed achieved from the adapter. I repeated the test by flipping the Thunderbolt cable. into the electop adapter to see if it works at USB 3.x speeds on one side of the adapter and USB 2.0 speeds on the other like my old C to A adapters do. He ran at full speed in both directions.
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