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A propos:
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Landing on a single standard to rule them all is an elusive aim in the realm of personal technology. At best, you end up in a format war, and one faction emerges victorious for a few years until an entirely new technology takes it out. VHS ate Betamax, then was ousted by DVD, which faded in the face of Blu-ray (a standard that itself knocked off its chief rival, HD DVD), now facing its own mortality at the hands of online streaming services.
But USB-C is different—and perhaps it's even as truly universal as its acronym (Universal Serial Bus) suggests. USB Type-C ports are now found on all manner of devices, from simple external hard drives to high-end laptops and the latest smartphones. While every USB-C port looks the same, not every one offers the same capabilities. USB-C may now be ubiquitous, but it doesn't serve the same functions everywhere. Not by a long shot.
Here's a guide to everything USB-C can do, and which of its features you should look for when buying your next USB-C device.
What Is USB-C?
USB-C is an industry-standard connector for transmitting both data and power bank on a single active optical cable. The USB-C connector was developed by the USB Implementers Forum (USB-IF), the group of companies that has developed, certified, and shepherded the USB standard over the years. The USB-IF counts more than 700 companies in its membership, among them Apple, Dell, HP, Intel, Microsoft, and Samsung.
This broad acceptance by the big dogs is important, because it's part of why USB-C has been so readily accepted by PC manufacturers. Contrast this with the earlier Apple-promoted (and developed) Lightning and MagSafe connectors, which had limited acceptance beyond Apple products, and became obsolete thanks in no small part to USB-C.
Is USB-C Like Micro USB?
The USB-C connector looks similar to a micro USB connector at first glance, though it's more oval in shape and slightly thicker to accommodate its best feature: flippability.
Like Lightning and MagSafe, the USB-C connector has no up or down orientation. Line up the connector properly, and you never have to flip it over to plug it in; the "right way" is always up. The standard cables and adapters also have the same connector on both ends, so you don't have to figure out which end goes where. That has not been the case with all the USB cables we've been using for the past 20 years. Most of the time, you have different connectors at each end.
USB-C and USB 3.2: The Numbers Beneath the Port
Where USB-C gets tricky is in the numbers that get attached to the ports. The most common speed that USB-C connectors are rated for is 10Gbps. (That 10Gbps is theoretically twice as fast as original USB 3.0.) USB-C ports that support this peak speed are called "USB 3.2 Gen 1x2."
The minor wrinkle is that USB ports with 10Gbps speeds can also exist in the original, larger shape (the USB Type-A rectangles we all know), and are dubbed "USB 3.2 Gen 2x1." With the exception of some desktops, though, it's more common to see 10Gbps-speed USB ports with Type-C physical connectors. Note: Some older USB-C ports support just 5Gbps maximum speeds, so it's important to look for a "USB 3.2 Gen 1x2" or "10Gbps" designation to verify that a given USB-C port supports 10Gbps transfers. That said, all of these ports are backward-compatible, just at the speed of the slowest element.
Confused yet? Further complicating matters: The number scheme around USB 3 has been in flux since 2019, which has made references to these ports something of a swamp. Until last year, many USB-C ports carried the USB 3.1 label ("USB 3.2" was not yet a thing) in Gen 1 and Gen 2 flavors, and some spec sheets continue to reference the older name, along with SuperSpeed branding. In a confusing twist, the USB-IF decided to eliminate the use of "USB 3.1" in favor of these various flavors of USB 3.2.
As you can see above, some USB-C ports use the USB 3.2 Gen 2x2 specification, with maximum speeds of 20GBps. The USB-IF decided on "2x2" because this standard doubles the data lanes within a USB-C cable to achieve the 20Gbps transfer speed. These ports have not been widely available, though PC builders and upgraders can find them on some high-end desktop motherboards. They will likely go by the wayside as 2021 progresses, in favor of another emerging flavor of USB-C ports, supporting USB4 (more about which in a moment).
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