When observing how the standard has evolved over the years, one can notice a distinct bias toward increasing the speed of data communications (Fig. Since its early days, USB has been positioned as an external bus standard for fast data communications. This thankfully isn't as much of an issue today, but you should still stay away from no-name USB-C cables if they haven't been properly tested and approved.This file type includes high-resolution graphics and schematics when applicable. Since the cable pulls more power than older connections, when USB-C was first in adoption, low-quality cables could fry your devices. There are also historical problems with USB-C. Plus, having to buy adapters to get the rest of this functionality back is a pain, since it's an additional expense. For instance, your laptop might have two USB-C ports, where one only works for charging and the other is good for connecting an external display. Not every USB-C port will work with all the possible features of USB-C, either. Buying the best USB-C cables comes at a premium. If you buy a third-party cable (even a high-quality one), it may prevent you from taking advantage of the feature. For example, your phone might offer USB-C fast charging, but only with the cable that came in the box. One major problem is the amount of variance in USB-C devices. Aside from the naming confusion with USB 3, there are other usability issues affecting everyday users. This is an interface developed by Intel and Apple that allows for much faster connections when transferring data.Īs you've probably noted, these standards are nowhere close to perfect. While we're discussing USB standards, it's important to also mention Thunderbolt. And keep in mind that these transfer rates are all theoretical maximums the real-world speeds probably won't reach those heights. You'll just be limited to the slowest speed supported by either device or the cable. These standards are all backward-compatible, so if you plug a USB 3.2 Gen 2x2 cable into a USB 3.0 slot, it will work fine. Marketers like to use general terms like 'USB 3.2' without specifying the generation, so make sure you know what you're actually getting. But this standard is still in its early stages, and is thus not widely available at the time of writing.īecause of these overlapping terms that are easy to confuse, it's important to check the specific details on a cable (or device) before you buy it.

Looking forward, USB 4 was released in 2019 and only works with USB-C connectors.

Usb 2 vs usb 3 charging