These range from annoyances like slow charging and unreliable performance, to major problems like breaking and even becoming a fire hazard.
This is especially true with USB-C. In the early days of USB-C, many cables were incorrectly configured and could damage devices. Modern cables shouldn't have this problem, but it's still wise to make sure your charger is safe.
While you don't have to buy a cable from your phone's manufacturer, you should stick to recognized brands. It's a small difference in price, but it's worth it. Another important aspect is cable length.
Short cables are great for portability, but that can leave you sitting on the floor next to a power outlet as your phone charges. On the other hand, a cable that's too long can be inconvenient to carry, will tangle more easily, and is potentially a tripping hazard. Three feet is a good minimum length for a charging cable. This allows you to keep your phone in your hand while connected to a battery in your bag or pocket.
They're also usually long enough to reach from an outlet to a desk. If you often need to use your device far away from the outlet while it's charging, a six-foot cable will usually do. Need a new cable and aren't sure what to get? Here are recommendations for every type. It includes two one-foot cables, two three-foot cables, and one six-foot cable.
Need a USB-C cable? There are many other great USB-C cables , as well. This two-pack of six-foot Anker Lightning cables are braided for extra durability.
Hopefully you better understand USB and how to use it on all your devices. Of course, USB is just the start. A hub typically has four new ports, but may have many more. You plug the hub into your computer, and then plug your devices or other hubs into the hub. By chaining hubs together, you can build up dozens of available USB ports on a single computer. Hubs can be powered or unpowered. A high-power device like a printer or scanner will have its own power supply, but low-power devices like mice and digital cameras get their power from the bus in order to simplify them.
The power up to milliamps at 5 volts for USB 2. If you have lots of self-powered devices like printers and scanners , then your hub doesn't need to be powered -- none of the devices connecting to the hub needs additional power, so the computer can handle it. If you have lots of unpowered devices like mice and cameras, you probably need a powered hub. The hub has its own transformer and it supplies power to the bus so that the devices don't overload the computer's supply.
When the host powers up, it queries all of the devices connected to the bus and assigns each one an address. This process is called enumeration -- devices are also enumerated when they connect to the bus. The host also finds out from each device what type of data transfer it wishes to perform:. As devices are enumerated, the host is keeping track of the total bandwidth that all of the isochronous and interrupt devices are requesting.
They can consume up to 90 percent of the Mbps of bandwidth that's available USB 3. After 90 percent is used up, the host denies access to any other isochronous or interrupt devices. Control packets and packets for bulk transfers use any bandwidth left over at least 10 percent. The Universal Serial Bus divides the available bandwidth into frames, and the host controls the frames.
Frames contain 1, bytes, and a new frame starts every millisecond. During a frame, isochronous and interrupt devices get a slot so they're guaranteed the bandwidth they need. Bulk and control transfers use whatever space is left. The technical links at the end of the article contain lots of detail if you'd like to learn more. The standard for USB version 2. USB 2. To allow a smooth transition for both consumers and manufacturers, USB 2. Supporting three speed modes 1. The deployment of USB 2.
In addition to improving functionality and encouraging innovation, USB 2. The USB 3. USB 3. It's meant for applications such as transferring high-definition video footage or backing up an entire hard drive to an external drive.
As hard drive capacity grows, the need for a high-speed data transfer method also increases. Adoption of the USB 3. Chip manufacturers must design motherboard hardware that supports USB 3. Computer owners have the option to purchase cards that they can install in their computers to give USB 3. But hardware support is just part of the problem -- you also need support from your operating system.
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