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Micro USB vs Mini USB: Difference, Function & Use in 2023

Micro USB vs Mini USB

Universal Serial Bus (USB) connectors are probably the most common interface used in today’s time. It is widely used for connecting peripherals to computers.

It was first introduced in the mid-1990s, by the collaboration of vendor companies IBM, DEC, Compaq, Microsoft, Nortel, Intel, and NEC.

USB connectors are more important than you think. Besides connecting devices, it also serves as a bus for data communication between the computer and other devices. Additionally, you can use it to charge your devices.

Today, we have different types of USB connectors, and each of them differs in terms of size, speed, and performance. Out of all the available connector types, mini USB and micro USB are probably the most common ones. These connectors are frequently used in smaller devices such as mobile phones, and other portable devices.

Although micro USB vs mini USB are completely different from each other, there’s still a lot of confusion among users regarding the two. No worries, we have got your back. In this guide, we will highlight all the major differences between the two connectors.

The Function of Micro USB

Micro USB is probably the smallest of all USB connectors. It was mainly developed for connecting transportable equipment such as video players, mobile phones, image presentations, sensor technology, and navigation systems.

It was first launched in 2007, and since then smartphone manufacturers have been using the micro-B connection for both recharging and file transmission. Even Android laptops are equipped with micro USB ports, but they employ a different connector for their battery charger.

A micro USB port can be found on many non-Apple laptops and handheld devices. It is also used for charging portable devices.

This type of connector includes four shielded wires: GND, +5v, D-, and D+. While GND and +5v are used for power, the other two are needed for data signals. It has a diameter of 5 mm, which is about half the size of a standard USB connector. Even the size of the receptacle is smaller than standard connectors.

A micro USB can be used with standard USB ports, but not with mini USB ports. It is also not compatible with Lightning ports or Thunderbolt.

The Function of Mini USB

Mini USB is a type of USB port that is used for transferring data between a computer and other electronic devices. There are three different types of mini USB connectors: an AB-type, A-type, and B-type. Among these three, mini B-type is the most common interface. It is a 5-pin USB connector with high stability and compactness.

It comes with a helical interface that helps transfer power and data between multiple devices. This type of USB connector is widely used to charge portable devices and transfer information between tablets and mobile phones.

A mini USB can be identified by its size. Compared to the standard USB connector, it is smaller in size. Other than mobiles and tablets, it is also used in MP3 players, portable hard drives, and digital cameras. Some handheld units like GPS devices are also equipped with a mini USB port.

The good thing about a mini USB is that it can be plugged into a device in either orientation. Plus, it consumes less power than a standard USB connector. This makes it a suitable choice for battery-operated devices.

When to Use Micro USB?

A micro USB connector has a flat and slimmer shape. It measures approximately 6.85 x 1.8 mm. It is primarily used for charging devices and transferring data. You will also find micro USB ports in storage devices.

This type of connector has a longer life cycle. Plus, it offers a faster data transfer speed. It usually requires replacement after 10,000 insertions. The good thing about micro USBs is that they are mobile-friendly and OTG-compliant. Last but not least, it is also very durable.

When to use Mini USB?

A mini USB connector is square and has rounded cinches on one side. It has an approximate size of 3 x 7 mm. It is primarily used for storage and data transfer. Compared to micro USB, mini USB has a lower data transfer speed.

It has a life cycle of only 5,000 insertions before it needs to be replaced. It is not OTG-compliant or mobile-friendly. Although mini USB is still in use, it is technically an outdated technology.

Pros & Cons of Micro USB


  • Can be used for charging mobile devices
  • Less mechanical damage even after continuous use
  • Has a life cycle of 10,000
  • Compatible with USB OTG


  • Smaller in size
  • Has limited transfer ability

Pros & Cons of Mini USB


  • Waterproof design
  • Highly portable
  • Sealed and dustproof


  • Outdated technology
  • Has a few mechanical flaws

Difference Between Micro USB vs Mini USB

Micro USB vs mini USB is both very common in today’s market. But they are different from each other. In this section, we will point out the main differences between the two connector types.

Micro USBMini USB
It is smaller than a mini USB.It is bigger than a micro USB but smaller than a standard USB.
It can work for ten thousand cycles.It can work for five thousand cycles.
It has five pins at both plugs for better functioning.It is slightly less efficient but can connect more devices at once.
It has only one way of connecting devices.It is more versatile than a micro USB.
It is a version of USB 2.0.It was developed together with USB 2.0.
It was introduced two years after the mini USB.It was the primary interface before micro USB.
It is widely used in smartphones, GPS devices, game controllers, and tablets.It is commonly used in MP3 players, digital cameras, and mobile phones.

Micro USB vs Mini USB FAQs

Q1. What is a USB connector used for?

Ans: Universal Serial Bus (USB) connectors are mostly used to connect computers to peripheral devices such as scanners, printers, cameras, camcorders, and more.

Q2. What are the advantages of using a micro USB?

Ans: One of the main advantages of using micro USB connectors is that they can be used for both data and power delivery. Not only that, but it is also easier to connect and disconnect compared to other types of connectors.

Q3. Are mini USB connectors still in use?

Ans: Mini USB connectors are still in use, but manufacturers do not recommend using them because it is functionally out-of-date. The latest standard is the micro USB connector.

Conclusion on Micro USB Vs Mini US

Mini USB was the first small USB connector to enter the market. During the mid-2000s, mini USB was the mainstream interface and was used in a variety of devices such as MP3 players, mobile phones, etc. 

Micro USB was introduced two years after mini USB. Compared to a mini USB, a micro USB is more convenient to use. Not only that, but it also offers better functionality.

So if you compare both USB connectors, micro USB is better and more popular than mini USB.