USB OTG: What is it?

USB OTG is a valuable extension of the USB standard that makes mobile devices more versatile and offers you more options in your daily life.

USB OTG: How it works and its advantages

USB On-The-Go (OTG) is an extension of the USB standard that allows mobile devices such as smartphones and tablets to communicate directly with other USB devices without the need for a computer as an intermediary. This technology opens up a wide range of possible applications and increases the flexibility of using USB accessories.

• The classic USB standard usually involves a clear division of roles: a computer (host) controls a peripheral device (client). However, USB OTG allows mobile devices to function as hosts themselves. This means you can connect an external keyboard, mouse, USB stick or even a MIDI keyboard directly to your smartphone, for example.

• A key advantage of USB OTG is its ease of use: you only need an OTG adapter or a compatible OTG cable to connect different devices. This is particularly convenient for users who are on the go and don’t want to carry a full set of computer equipment with them.

USB OTG applications and compatibility

USB OTG has a wide range of uses. For example, you can:

• transfer files directly from a USB stick to your smartphone or tablet,

• connect external hard disks,

• use game controllers for an enhanced gaming experience,

• control a camera or printer,

• connect MIDI instruments to music apps.

• However, not all devices support USB OTG. To find out if your smartphone or tablet is compatible, you can either check the technical specifications of your device or use a special app from the Play Store that tests OTG capability.

Distribution and modern standards

USB OTG is now widely used and supported by most modern Android smartphones and tablets.

• Apple devices, on the other hand, use their own implementation, which only allows similar functionality on newer iPads with a USB-C connection. USB-C in particular has further simplified the use of OTG, since the plug can be used on both sides and often no additional adapters are needed.

• With the proliferation of USB-C, there are specialized OTG adapters that make older USB-A ports compatible with USB-C devices. These adapters are especially useful for users who want to connect older peripherals to modern smartphones or tablets.