This protocol must be supported by the OS (in this case MacOS) for any devices that are connected to function properly. This can be thought of like a language that is needed to communicate with the CPU, for the device to do its job.
USB-C, like any other port relies on a protocol. They add additional connectivity to the existing USB-C ports – like HDMI ports, gigabit ethernet (via a gigabit ethernet port), and even standard USB-A ports. This allowed Apple to simplify the design, while still allowing all the connectivity of older MacBooks – but with one major caveat: adapters. These are more versatile than USB-C, and at least two ports have featured in every MacBook since 2018 (with the first being found in the 2015 12-inch Retina MacBook). USB-C can also be extended through systems such as PCI-E (which is a protocol designed to communicate with devices such as GPUs, network cards, SSDs, etc.) to create “Thunderbolt” ports. USB-C is a very versatile port – functional in 2 orientations (no more trying to insert your USB-A devices in the wrong way), while also having the potential for increased bandwidth, courtesy of the higher number of contacts in the port. In this article we’re going to be investigating this issue and telling you if you need to be worried or not. There have been reports recently that some of these USB-C adaptors have been killing M1 MacBooks. You probably use (or plan to use) a dongle or adaptor with your M1 MacBook.
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