Let's take a look at universal serial bus.
USB
WHAT IS IT?
USB (Universal serial bus) is a plug-and-play interface that allows a computer to connect with peripheral and other devices. USB has wide compatibility from keyboards and mice, to music players and flash drives. USB also is used to send power to certain devices, i.e. smartphones and tablets, and charging their batteries. It first came in January 1996 with USB 1.0. This industry-standard now and the things that can connect with USB will.
USB DEVICES
A few of the most common USB device that connects to a computer.
- · External drive
- · MP3 players
- · Microphone
- · Mouse
- · Printer
- · Digital Camera
- · Thumb drive
- · Keyboard
USB CONNECTORS
Mini-USB, also known as mini-B, is used as one of the oldest and cause of that Mini-USB has mainly been replaced by Micro-USB and USB-C cables on the latest devices.
Micro-USB was in 2007, was made to replace mini-USB. The two types of it are Micro-A and Micro-B, they both have a connector the size of 6.85 x 1.8 mm, but Micro-A connectors have a larger maximum overhold. Micro-USB cables are used to connect computer peripherals, power banks, and for charging ports on smartphones. Many companies are starting to upgrading to USB type-C but Micro-USB is still commonly used with electronic devices as it is cheaper.
The USB Type-C cable is the newest and on most modern-day Android smartphones many other USB-connected devices. USB-C cables are reversible and have way more pins than Micro USB so you can do even more like Thunderbolt 3 can be used as a display connector.
USB TRANSFER SPEED
USB 1. is an external bus standard supporting data transfer rates up to 12 Mbps and is capable of supporting up to 127 peripherals.
In 2001, Compaq, Hewlett Packard, Intel, Lucent, Microsoft, NEC, and Phillips developed USB 2.0, also known as hi-speed USB. Hi-Speed USB is capable of supporting a transfer rate of up to 480Mbps (Megabits per second), or 60Mbps (megabytes per second).
Made in November 2009, USB 3.0, aka Super-speed USB, by Buffalo Technology, but the first certified devices weren't made till in January 2010. USB 3.0 enhanced upon the USB 2.0 with overall performance increase, better power management, and increased bandwidth. It sends two unidirectional data paths for getting and transferring data at the same time. USB 3.0 supports transfer rates up to 5.0Gbps (Gigabits per second), or 640Mbps (Megabytes per second). The first qualified devices were motherboards from ASUS and Gigabyte.
In July 2013, USB 3.1, aka Super-speed+, is capable of transfer rates of up to 10 Gbps, putting it in line with the first generation of Apple's Thunderbolt channel.
USB 3.2 Gen 2x2 offers a max speed of 20Gbps. The 2x2 means it's the second generation and has two 10Gbps lanes to accomplish a maximum transfer rate of 20Gbps. And is the latest in the USB market.
USB VERSION COMPATIBILITY
Each version of the USB port is backward compatible and forward compatible, meaning it can support any version below or above its current number. Though, you should know that devices with lower versions run at their native transfer speeds even if USB 3.0 is capable of higher. Just like that if you connect a USB 3.1 device into a USB 2.0 port, the 3.1 device's max transfer rate is limited to that of the 2.0 port.
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