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With Apple’s Thunderbolt 3 protocol, for example, you can achieve transfer speeds of 40 Gbps.Ĭharging speed: The device’s battery and the cable’s design determine the charging speed. Since USB-C is an open standard, however, these aren’t the only options in terms of speed.
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USB 3.1 Gen 2 doubles that rating to 10 Gbps. USB 3.0 and 3.1 Gen 1 cables are capable of transfer speeds up to 5 gigabytes per second (Gbps). Transfer speed: The cable’s protocol sets the maximum possible transfer speed. For example, you can use a USB-C cable to transfer photo files from your smartphone directly to a laptop instead of through email or the cloud, all while charging the battery at the same time. Two of the most common uses for any USB cable are transferring data between two devices and charging batteries. A mismatched cable/device pairing can limit speeds or prevent the cable from working altogether. If your laptop is limited to USB 2.0, you’ll need a USB-C cable with the 2.0 protocol. In most cases, it’s best to find a cable with the same protocol as your device. You’ll find USB-C cables that use the USB 2.0, 3.0, or 3.1 (Gen 1 or 2) protocol. Most devices are compatible with USB 3.0, although some older laptops and desktops may be limited to the slower 2.0.
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USB cables and devices can get confusing with terms like “USB 3.0,” “micro USB,” and “USB-A.” In addition to the plug type (marked by letters like A, B, and C), USB cables all have a specific protocol that affects device compatibility and data transfer rates. If not, it’s best to use a cable from the device’s manufacturer or one designed specifically for your device. If it complies with the standard, you can use a cable that also meets that standard.
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You can usually find this information in the owner's manual or online. USB-C Power Delivery: Check to see if your device is compliant with the USB-C Power Delivery (PD) standard. This risk increases with third-party cables that may not be as “universal” as the packaging suggests. If the cable isn’t compatible, there’s a risk of damaging the battery or even starting a fire if there’s enough power. As a result, some aren’t compatible with some devices even if the cable fits into a device’s USB port.ĭevice compatibility means a USB-C cable will work with a device without damaging it. The USB-C specification is considered an “open standard,” meaning companies can change the spec for their own needs, so there is some variation in design when it comes to these cables. If a cable doesn’t offer the performance or capabilities you need, it’s best to look elsewhere. Will you use it to charge a tablet or smartphone? Do you need a cable to transfer files between devices? Will you use the cable with multiple devices? Knowing your intended use will help you narrow your options. When you’re looking at different USB-C cable options, it helps to know how you will use the cable. In reality, some cables are faster and more reliable than others. USB-C cables are extremely versatile, on paper at least, since they can power devices and transfer data at the same time. Some laptops now sport at least one USB-C port, too. Many newer smartphones and tablets have already made the switch. The list of devices with a built-in USB-C port continues to grow by the month.