When comparing 2.0 and 3.0 there are a few major differences. First the transfer rates: USB 2.0 offers transfer rates of 480 Mbps and USB 3.0 offers transfer rates of 4.8 Gbps - that's 10 times faster. Note that the transfer speeds also depend on the device in use in addition to the bus type and USB ports and cables.
Just so, are all USB 3.0 ports Blue?
Since USB 2.0 and USB 3.0 ports may coexist on the same machine and they look similar, the USB 3.0 specification recommends that the Standard-A USB 3.0 receptacle have a blue insert (Pantone 300C color). The same color-coding applies to the USB 3.0 Standard-A plug.
Can a USB 2.0 be used in a 3.0 port?
The A connectors still work properly so any 2.0 device with a 2.0 cable can be used with 3.0 ports or hubs. To sum up: USB 3.0 devices require 3.0 cables. USB 2.0 cables can be used with 3.0 ports but the transfer rate will fall back to 2.0.
In the nutshell, your USB 2.0 device can be charged using USB 3.0 port, but you won't notice any improvements. However, if your device allows faster charging, a USB 3.0 cable and port can surely help you out. Also, your phone's wall chargers are your best bet at charging at the faster rate.
The Standard-B is used at the device side. Since USB 2.0 and USB 3.0 ports may coexist on the same machine and they look similar, the USB 3.0 specification recommends that the Standard-A USB 3.0 receptacle have a blue insert (Pantone 300C color). The same color-coding applies to the USB 3.0 Standard-A plug.
the interface will fall back to USB 2.0. It's backwards compatible. You'll be able to maximize your bandwidth when using a USB 3.0 cable with USB 3.0 devices and ports, otherwise plugging a 3.0 device into a 2.0 port or a 2.0 device into 3.0 a port will get you standard USB 2.0 data rates.
USB 3.1 (aka USB 3.1/gen 2) is the successor to USB 3.0. Identifiable by its bright turquoise port, USB 3.1 doubles the transfer speed of 3.0 to a whopping 10 Gbps. USB Power Delivery 2.0 makes a big step forward as well with up to 100W of power.
The USB receptacle on your PC is a type A connector and can be recognized by its rectangular shape.Type A receptacles can be found on upstream devices such as a USB host, or a hub. Type A plugs can be found on cables, and smaller peripherals such as a mouse and a flash drive.
|Release name||Release date||Maximum transfer rate|
|USB 1.1||August 1998||Full Speed (12 Mbit/s)|
|USB 2.0||April 2000||High Speed (480 Mbit/s)|
|USB 3.0||November 2008||SuperSpeed (5 Gbit/s)|
|USB 3.1||July 2013||SuperSpeed+ (10 Gbit/s)|
USB On-The-Go, often abbreviated to USB OTG or just OTG, is a specification first used in late 2001 that allows USB devices, such as tablets or smartphones, to act as a host, allowing other USB devices, such as USB flash drives, digital cameras, mice or keyboards, to be attached to them.
Basically, if your Android smartphone or tablet supports USB OTG, then you can connect USB devices such as keyboards, game controllers or a USB flash drive to your device. That's the only button this app provides, and that's all it takes to check if either your phone or tablet supports OTG or not.
How to Connect with a USB OTG cable
- Connect a flash drive (or SD reader with card) to the full-size USB female end of the adapter. Your USB drive plugs into the OTG cable first.
- Connect OTG cable to your phone.
- Swipe down from the top to show the notification drawer.
- Tap USB Drive.
- Find the file you'd like to share.
One can be a Lightning connector for linking with an iPod, iPhone or iPad. The other is a regular USB connector for use with a laptop or desktop PC. You can also move files from your iPhone or iPad into the devices then transfer them to a computer. But that's not all.
USB (Universal Serial Bus) is the most popular connection used to connect a computer to devices such as digital cameras, printers, scanners, and external hard drives. USB is a cross-platform technology that is supported by most of the major operating systems.
A USB port is a standard cable connection interface for personal computers and consumer electronics devices. USB stands for Universal Serial Bus, an industry standard for short-distance digital data communications. USB ports allow USB devices to be connected to each other with and transfer digital data over USB cables.
"Smart TVs" often have at least one USB port that let you plug in a hard drive, flash drive, or other USB storage device to view media files on your television. If you have a TV that does this, that's pretty awesome in and of itself. If you're stuck with a service port, that's really all it's supposed to be used for.
If your television set has a USB port, you may be able to use it to watch movies that you have downloaded or copied from your computer. Exactly what movies you can watch depends on your set, the video files and possibly even the USB drive itself.
Most HDTVs have RCA audio-out jacks, and a simple adapter cable will let you plug in your PC speakers. Just make sure your TV's USB port can supply power, as not all can; there's often no way to know without trying the speakers.
With very rare exceptions, you cannot connect a TV directly to standard speakers. The RCA connection outputs send a two-channel stereo (content dependent) from the TV to the external audio system. In this case, you can use a stereo mini-jack to RCA adapter cable.
Step 4: On the back of the computer tower are a number of small, round, coloured-coded sockets. The one to plug your speakers into is usually green. It may also be marked with a headphones symbol or be labelled 'Audio out'. Push the jack into this socket firmly to get a good connection.
First, your system will need an available PCI or PCI Express expansion slot. Second, you'll need $20-30 you can devote to the upgrade. Yep, you guessed it, you're going to be buying and installing a USB 3.0 PCI card, which will add four of the blazingly fast ports to your PC.
Yes, Integral USB 3.0 Flash Drives and card readers are backwards compatible with USB 2.0 and USB 1.1 ports. The USB 3.0 Flash Drive or card reader will work at the speed of the port, for example if you use a USB 3.0 Flash Drive in your USB 2.0 laptop, it will work at USB 2.0 speed.
If your PC happens to be a laptop you won't be able to install an internal USB 3.0 card. Instead, you'll need to plug in an external USB 3.0 Express Card adapter. Unfortunately, if your laptop is an older model with a PC Card connector instead of an Express Card connector you won't be able to upgrade to USB 3.0.