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Tests show Thunderbolt ports on M1 Macs don't fully support USB 3.1 Gen 2 speeds: Digital Photography Review
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Anker USB C Hub Adapter, 5-in-1 USB C Adapter with 4K USB C to HDMI, Ethernet Port, 3 USB 3.0 Ports, for MacBook Pro, iPad Pro, XPS, Pixelbook, and More : Amazon.ca: Electronics
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