There are two ways of establishing the speed capabilities of a data connection. Apple MacBook Pro 16-inch, 2021 with M1 Pro, 32 GB memory, 2 TB internal SSD, using its internal display.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.

Conncet mac to pc usb 3.1