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All about USB: 

USB stands for Universal Serial Bus. USB or Universal Serial Bus is by far the most popular connector for connecting various peripheral devices to computer systems. This industry standard, developed in the mid-1990s, is used for both data and power supply, and is now widely used worldwide to connect digital cameras, audio-video devices, printers, scanners, smartphones, and other consumer electronics. USB has replaced traditional means of connectivity that include parallel ports, serial connectors, DB9 connectors, PS2 or MIDI ports.

USB version:

The technology that allows data to be transferred over a cable from one device to another. Examples: USB 2.0, USB 3.0

USB Type:

The type of USB connector or port. The term "USB type" can mean three different things:

1.) The connectors at the end of a USB cable

2.) The ports that the cable plugs into

3.) The cable itself (sometimes there are two types in the name). Usually the type describes the physical shape of the connectors or ports.

Examples: USB Type-C, USB Type-B Micro

 USB port types

A port (also called a socket, jack, or receptacle) is the part of your device that the USB connector plugs into. USB ports are sometimes called "female" because they accept a "male" connector.

Connectors - USB connector:

Phones with a USB port connect to a computer's USB port via a cable, allowing faster data transfer than the phone's own ports. Most phones use mini, micro or Type-C USB ports.

USB connector types

USB connectors are sometimes called "male" connectors because they plug into a "female" port.

1.) Micro connectors

1.1) USB Type-A Micro: 

Does not have a dedicated port, but instead plugs into a dedicated AB port that accommodates both USB Type-A Micro and USB Type-B Micro. It is found in devices with USB On-The-Go (OTG), such as smartphones and tablets. In most cases it is replaced by USB 

1.2) Type-B Micro (USB Type-B Micro): 

Used by modern Android devices as a standard plug and charging port.

2.) Mini connectors

2.1) USB Type-A Mini (USB Type-A Mini): 

Developed to allow on-the-go (OTG) peripheral devices, such as smartphones and tablets, to function as host devices for keyboards and mice. Replaced by USB Type-B Mini and Type-B micro connectors.

2.2) USB Type-B Mini: 

Found in digital cameras, external hard drives, USB hubs, and other equipment. It is used by USB 1.1 and 2.0

3.) USB Type-C connection (connectors - ports)

USB Type-C ports are now found in all types of devices, from ordinary external hard drives to high-class laptops and the latest smartphones.

4.) USB On-The-Go (OTG)

USB OTG stands for USB On-The-Go. Using a USB OTG cable, you can connect your smartphone or tablet to other devices.

- Examples:

Xiaomi Redmi 8a / Samsung Galaxy A10

USB support: USB Type-C 2.0, USB On-The-Go / microUSB 2.0, USB On-The-Go


USB Type-C / Thunderbolt 3-4

USB Type-C to PC / Laptop USB port; USB type-C to another type of ports

(USB Type-C connectors can be used for data transfer, power supply and even video and audio)

USB Type-C is a smaller, reversible iteration of the traditional USB port. Its connector is symmetrical. USB Type-C cables and ports are also small enough to work with smartphones and other smaller devices. In smartphones, USB type-C is replacing the Micro-USB connector you’d find on the bottom of your device. You can find them on everything from a Samsung smartphone to a Nintendo Switch. The speed at which a device charges with a USB Type-C cable ultimately depends on whether it is plugged into a USB 3.1, USB 3.2, or Thunderbolt 3 port.

USB-C / Thunderbolt 3 - explanation

Thunderbolt is a relatively new technology launched in 2011 through a development collaboration between Intel and Apple and now is owned by Intel. Thunderbolt was only compatible with Apple MacBook Pro, but Thunderbolt 3 universalized the technology and made it compatible with USB Type-C. Thunderbolt 3 has adopted the USB Type-C format, so all Thunderbolt 3 ports can use regular USB Type-C cables (connectors). Devices with Thunderbolt ports are also more expensive, but a USB Type-C port allows Thunderbolt cables to connect in all cases. USB Type-C and Thunderbolt 3 technology are now largely interchangeable. USB Type-C cables (connectors) are now fully compatible with Thunderbolt ports, and USB Type-C ports are compatible with Thunderbolt cables.

However, there are some key differences between the two:

1.) Thunderbolt 3 has higher performance requirements than USB Type-C, so not all USB Type-C cables are of high enough quality to run at Thunderbolt speeds. So, you can use Thunderbolt cables with a USB Type-C port but not every Windows computer with USB Type-C ports will support Thunderbolt 3 cables.

2.) Thunderbolt 3 supports PCI Express (protocols) for using external graphics cards, DisplayPort for driving multiple 4K monitors or a single 5K monitor. Thunderbolt 3 has a PCIe data transfer speed of 16 Gbps;

Thunderbolt 4 supports 4K to dual monitors or 8K to a single monitor. Thunderbolt 4 supports a PCIe data transfer speed of 32 Gbps.

Thunderbolt cables - collage

You’ll find Thunderbolt 3 ports on many Apple devices (MacBook Pro has Thunderbolt 3/USB type-C ports) and some Windows laptops like the ASUS Predator. So, If you use, for example, a Lightning (Male) to USB Type-C (Male) adapter cable, which you can find here on, you will be able to connect your iPhone, iPad, or iPod to your USB Type-C or Thunderbolt 3 (USB-C) enabled Mac for syncing and charging.

Micro USB charging Interface

Micro USB to PC / laptop USB port; Micro USB to another type of ports

(This small port is still often the preferred charging connector by many manufacturers of smartphones and low-power tablets. It's not very likely to see it on a laptop or desktop computer. Regular micro USB ports support USB 2.0 speeds /480 Mbps/, but there are a few devices, mostly external hard drives, that have micro USB 3.0 ports that have some extra pins and offer faster transfer speeds.)

Apple Lightning 8 pin

Lightning 8-pin connector

The Lightning connector is used to connect Apple mobile devices (iPhone / iPad / iPod / Apple’s wireless keyboard - mouse, Apple pencil /Lightning port/) to PC, USB battery charger, camera, monitor and other peripheral devices. In fact, you can connect/charge your iOS devices with whatever port you prefer. You can find the Lightning connector in different versions of adapter cables with USB-A or USB type-C ends - male and female.

(8 pins instead of 30 pins /Apple 30 pin connector/; Digital signal transmission)