Inateck SATA RAID SSD and SanDisk Extreme Portable measured speed: read 390MB/s, write 418MB/s (will limit USB 3.1 Gen 2 read and write speed to 5 Gb/s).
M1 Mac Thunderbolt Test SummaryĮclectic Light’s results of two Thunderbolt 4 tests found that since November 2020, Apple’s Thunderbolt ports on any M1 model are almost unable to support USB 3.1 Gen 2, resulting in a speed that cannot reach 10Gb/s. 2021 MacBook Pro 16-inch with M1 Pro, 32GB RAM, 2TB SSDīoth devices were run in macOS 12.3.1 Safe Mode, in APFS format, and tested with Crucial Micron and Samsung SSDs, both external devices were tested for USB 3.1 Gen 2 speeds by the iMac Pro before they were finalized.
Many users have found that the Mac Thunderbolt (USB-C) port transfer speed cannot reach the official USB 3.1 Gen 2 speed, but Apple’s official website clearly states that Thunderbolt 4 can support USB 3.1 Gen 2 (up to 10Gb/s), USB 4 (up to 40GB/s) high-speed transmission, in order to verify whether there is really a problem with Thunderbolt, the foreign Eclectic Light website measured the Thunderbolt speed through two new-generation M1 Mac computers. Currently, many M1 Both Thunderbolt 3 and Thunderbolt 4 have the same problem.
However, it was found by foreign users that the external transmission speed could not reach 10Gb/s.
The USB-IF's Power Delivery standard governs power levels so a high-power charger won't damage a low-power device.Īpple sells its 140W charger separately for $99 but includes no charging cables with it.Apple added Thunderbolt (USB-C) port to M1 series Mac computers, which can support USB 3.1 Gen 2, up to 10Gp/s speed. To address this, the USB Implementers Forum standards group expanded USB charging with several new levels up to 240-watt charging levels this year. One area that's been out of reach for USB has been higher-end laptops for gaming, which need more than the 100-watt maximum USB has been able to supply. That's been a boon for consumers, who can use the same charging equipment to top up batteries in laptops, headphones, tablets, phones, game consoles and other products. USB has amplified its clout in the tech industry by expanding from data transfer duties to charging, first with phones and other small devices, and more recently with laptops. At its MacBook Pro launch event, Apple also announced its AirPods 3 and more colorful HomePod Mini smart speakers.