What is Micro USB?

Although USB technology continues to evolve, giving birth to more advanced USB-C interfaces and Thunderbolt protocols, Micro USB still plays a crucial role. It is widely used in older versions of Android phones, Bluetooth earphones, digital cameras, and kits.

Micro USB

The Micro USB was released by USB-IF on January 4, 2007. Because its thickness is only half of the previous generation connector (Mini-USB), it can be integrated into thinner electronic devices. Until the appearance of USB-C, Micro USB was the most popular interface for charging and data transmission.

Micro USB has the following features:

  • Supports hot swapping, plug and play
  • Supports either charging only or both data transmission and charging.
  • Supports USB 2.0 and USB 3.0 transmission protocols
  • Supports 1A to 2.4A current
  • Supports OTG function

There are four types of Micro USB connectors in total:

  1. Micro USB Type A 2.0
  2. Micro USB Type B 2.0
  3. Micro USB Type A 3.0
  4. Micro USB Type B 3.0

Micro USB Type A has been phased out, and the commonly seen one is Micro USB Type B.

Micro USB Types

Micro USB Type B 2.0

A micro-B USB has a black receptacle and compact 5-pin design with tapered edges in the port.

Micro USB B cable is the most common type or, better we can say, ‘the go-to standard for power and data transfer’ for many old android phones. It supports the high-speed transfer rate of 480 Mbps. The connector looks like a half-hexagon in shape – the best connector ever made – until USB Type-C arrived.

Micro USB Type B 3.0

Micro USB B 3.0 has an additional pin group (ten pin plug) on the side, enabling its incredible speed. It offers 10 times better data transfer rate compared to a regular Micro USB B. Moreover, Micro USB 3.0 features a double-socketed connection port – the biggest part is the same as regular micro USB, and the other is USB 3.0 port. Devices that use the USB 3.0 include Samsung Galaxy S5 and Note 3.

Micro USB Type A 2.0 (Phased out)

A Micro USB A cable comes with a female, rectangular-sized connector featuring a compact 5-pin design and receptacle. Micro-A USB connector looks like Micro-B at first sight, but it doesn’t have chamfered corners.

Micro USB Type A 3.0 (Phased out)

This type is almost hard to come by because it only provides the transmission speed of USB 2.0, but it is quite large in size.

What are Micro USB cables used for?

Many new versions of electronic products use USB-C ports. However, a Micro USB cable is cheaper than USB-C. It is still widely used in many old versions of Android devices, battery charging packs, Bluetooth headphones, tablets, Mp3 players, GPS devices, photo printers, digital cameras, and e-readers to charge and transfer data.

However, Micro-USB cables charge more slowly than Lightning and USB-C. They also put you in that fiddly annoyance when you have to find the right side of the connector to plug into your device on the first try. But for many devices, they’re the cables we need.

Micro USB FAQs

Mini USB vs. Micro USB


The micro USB offers many advantages over the mini USB. Here is the comparison of their sizes, power capacity, cycle life, etc.

  • Size: Micro USB is smaller in size and has a sleeker design which makes it consumer-friendly. The approximate size of a mini USB is 3 x 7 mm, and a micro USB is 6.85 x 1.8 mm.
  • Life: A mini USB cable has a cycle life of 5000 connect-disconnect, and a micro USB cable has a cycle life of 10,000 connect-disconnect.
  • Power capacity: A micro-USB with 3.0 technology can transfer power between 4.5 and 9 Watts.
  • Data transmission: The micro USB offers more data transmission options for devices with On-the-Go technology. A standard micro USB transfers data at a rate of up to 480 Mbps, while a higher-end micro USB that supports USB 3.0 and 3.1 technology offer a transfer speed of up to 5Gbps, which outperforms the mini USB.

Is micro USB the same as USB C?

Though a USB C cable and a micro USB cable look similar at first glance, they distinctly differ in capabilities. Following are some differences between micro USB and USB-C.

  • Data transfer rates: A USB-C cable deals with faster data transfer than micro USB and also supports multiple protocols, carries DisplayPort and HDMI signals. It transfers data up to 40 Gbps. Whereas a micro USB deals with data transfer speeds upto 5Gbps.
  • Charging speed: A USB-C cable is capable of fast charging and saves time when recharging a smartphone. It can power both low-wattage and high-wattage devices. In contrast, a micro USB can only power low-wattage electronics and requires a longer time when recharging a smartphone.
  • Connector design: USB Type-C has an oblong-shaped reversible (no fixed front and back sides) connector with 24-pins. You can plug the connector in without choosing any particular orientation. On the other hand, a Micro-USB has hooks at the bottom side to hold the cable in place. It must be oriented correctly to be plugged in.
  • Life span: Both USB-C and micro USB have a lifespan of 10,000 cycles (connect-disconnect).
  • Future scope: Many new generation of devices, including Android phones, now have a USB Type C port because it is highly versatile. USB Type C is slowly taking over micro-B USB.
  • Price: Micro USB is much cheaper than Type C.

Can a micro USB cable charge a USB-C device?

Yes, but with a special USB Type-C to Micro-USB adapter because a micro-USB port will not fit the USB-C port.

Wholesale Micro USB cable manufacturer

If you want to wholesale micro USB cables, you must find the right USB cables manufacturer to have the best experience.

Look for manufacturers with fair pricing, the best value, and superior customer service. These qualities can be found in ByteCable. We make genuine quality micro USB cables, and our pricing makes a great deal for wholesalers/distributors. If you want an initial quote, you can contact our sales team directly at sales@bytecable.com.

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