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What is USB-C?

Technology is advancing at the speed of light, and the supporting hardware that helps keep new devices charged and connected is always evolving too. If you’re buying the latest phone or upgrading your laptop, you might notice that some come equipped with USB-C ports and cables. But what is USB-C and how does it work? If you've ever wondered about those oval-shaped plugs and ports, read on to learn more.

Discover more about USB-C 

USB stands for “Universal Serial Bus" and is considered standard hardware for digital communications. USB-C is a cable connector that powers up your devices or transfers files quickly and efficiently. Whether you use a phone, laptop, or tablet, you likely have a USB-C charger—provided you have a newer device. USB-C is quickly becoming the universal standard, leaving the old-school, wide, rectangular-shaped USB-A connectors in the dust. This is good news for people with multiple devices, as you won't have to worry about having multiple cables to keep everything charged and connected—one USB-C cable should work for almost all of your devices in the near future. 

USB-C hardware can transfer data faster and transmit more power than USB-A hardware, enabling your devices to charge and download files much quicker. Another thing that makes USB-C easier to use? Unlike previous hardware, USB-C hardware has an oval-shaped plug that is symmetrical, so it's designed to be plugged in either up or down. Now, you don't have to fight with the USB-C plug to figure out which way it fits in the port. 

What is the difference between USB-C and regular USB? 

Older versions of USB cables don't deliver the power or speed associated with USB-C cables. For example, USB-A cables can only support 2.5 watts and 5 volts, which doesn't give you a lot of juice when you need to power up your device on the fly. By comparison, USB-C can deliver 100 watts and 20 volts of power. So, whether you're charging up your laptop or phone, you can get its battery back to 100% faster. There are also USB-B cables, but those square-shaped connectors tend to be compatible with printers and scanners, so they're not built for massive power and lightning-fast file transfers. 

Is Thunderbolt the same as USB-C?

No, but they're compatible. A Thunderbolt cable offers another way to charge your devices and transfer data. The advent of Thunderbolt 3 made the technology compatible with USB-C, so you can use a Thunderbolt cable with a USB-C port. However, not all PCs have Thunderbolt ports. You'll want to double-check your computer to see if it's compatible with Thunderbolt; otherwise, you can use a USB-C cable to connect or charge your computer as needed. If you're creating a more sophisticated computer setup featuring multiple monitors and accessories or doing mass data transfers, Thunderbolt may be a beneficial option. 
A white thunderbolt cable next to a laptop

What is a USB-C port used for?

Most often, a USB-C port is used for charging your device. You connect one end of the USB-C to your phone, computer, or other digital device, then connect the other end to an adapter plugged into the wall or a power strip. Then, watch the magic happen as your device powers up super-fast, thanks to the USB-C charger capabilities. There are also USB-C ports for video or audio components, like your computer monitors or speakers. In this instance, you would connect a USB-C cable to the port in your monitor or speaker, then connect the other end to a port in your computer.
USB C port

How do I know if I have a USB-C port?

The best way to find out if you have a USB-C port is to look at the bottom or outer edges of your phone, the sides of your laptop computer, or the back of any other digital device you may have. You're looking for a small oval-shaped port. There may only be one port, like in the case of your phone, but a larger device, like a computer or monitor, will likely have more than one USB-C port.
USB C cable and port

What devices use USB-C?

These days, many different devices use USB-C (properly known as USB Type-C), including laptops and desktop computers. A variety of phones also rely on USB-C for charging, as do tablets. But they're not the only devices that rely on USB-C—computer monitors, smart home devices, speakers and sound systems, keyboards and wireless mice, and a variety of other gadgets use USB-C to help you get the most out of your tech.

What is the difference between a USB charger and a USB-C charger? 

The term “USB” relates to the form of cabling, connectors, and the data that goes through them. It combines data and power to make it easier for you to connect devices to help them function more efficiently. USB has a few different form specifications for its connectors—USB-C is one of them. A USB-C charger is almost considered universal. It has stronger data transfer capabilities and power support. It also has a fully reversible plug, so it doesn't matter which end is connected to your device and which end is connected to the charger. So basically, you couldn't have a USB-C charger without USB.

Do you need a special charger for USB-C?

If your device in question—laptop, phone, or tablet—has a USB-C port, it will likely come with a USB-C charger that will be compatible with that port. If it doesn't come with a charger, you'll need to ensure you get a USB-C cable and compatible USB-C charger. You can just get a regular charger—it doesn't have to be anything fancy. If your device has a different USB port but you have a USB-C charger, you'll need to get a charger that will be compatible with your device's port (if it didn't come with one). 

Check out our various USB-C cables and other charging accessories.

Which phones/devices can you charge with USB-C?

With the exception of some of the latest iPad models compatible with USB-C cables to charge, most of the Apple devices are compatible with Lightning cables. If you have an iPhone or are planning to upgrade to the new iPhone, you'll want to make sure you have a charger cable for iPhone. Many Android phones, such as the Samsung Galaxy line of phones, rely on USB-C connections to power up. Other phones that use USB-C charging include the Google Pixel, some Motorola phones such as the Edge and G Play, and more. Many other devices, such as wireless headphones, laptops, including the MacBook and video game controllers, rely on USB-C charging. The Apple Watch charger is also USB-C, as is the iPad charger.
USB C port

Is USB-C better than USB-A for charging?

They're both two sides of the same coin, but their differences lie in their power management capabilities. For example, USB-A can support up to 2.5 watts and 5 volts. By comparison, USB-C can support 100 watts and 20 volts. So, while USB-A may offer enough power to charge smaller devices, USB-C can power up devices quicker, which may be advantageous for larger devices that require more juice, like laptops. So, if you need to charge a device that requires more power, USB-C is the way to go. Just make sure the device you want to charge supports a USB-C connection.

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Author

Carly Milne

Carly Milne is a Web Content Writer at AT&T, where she brings extensive professional writing experience and technology expertise from working with various technology companies, such as PayPal, Experian, Amazon, Dice and numerous others. She specializes in wireless and wireline technology and devices.