![]() ![]() Apple Mac Studio with M1 Max, 32 GB memory, 2 TB internal SSD, connected to an Apple Studio Display.USB 3.2 adds two-lane SuperSpeed+ at 10 and 20 Gb/s.Įclectic Light’s Howard Oakley carried out a series of tests with two M1 Macs:.USB 3.1 Gen 2 adds SuperSpeed+ at 10 Gb/s.USB 3.0 onwards supports SuperSpeed USB at 5 Gb/s.There is also a significant difference between theoretical and actual maximum speeds.īut tests suggest that most M1 Macs don’t support the USB 3.1 Gen 2 standard, making Thunderbolt transfers slower than they should be, in both theory and practice.Įclectic Light summarizes the bottom line of the current speeds offered by different standards. ![]() We’ve discussed many times the mess and confusion caused by different USB-C standards, devices, and cables. The tests were conducted on a 2021 16-inch MacBook Pro M1 Max, and a 2022 Mac Studio M1 Max … Background Pro users of M1 Macs have reported disappointing transfer speeds with external SSDs, and tests appear to show that most M1 Mac Thunderbolt ports don’t support USB 3.1 Gen 2 – which means they don’t offer the maximum 10Gb/s transfer speeds that would be expected from Thunderbolt 4.
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