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The widespread adoption of USB-C ports on modern smartphones, tablets, and laptops offers many advantages in terms of speed and ease of use. At the same time, it presents a challenge for users: How can you continue to use older peripherals with the ubiquitous USB-A connector? The solution is a USB-C OTG adapter. This article breaks down the technical criteria for selecting a suitable adapter and presents a selection of models for various use cases.
Choosing an adapter should be based on objective technical parameters to ensure compatibility and functionality.
The adapter's USB standard defines the maximum theoretical data transfer rate.
The actual speed achieved depends on all components involved: the host device (smartphone, laptop), the adapter, and the connected peripheral. A USB 3.0 adapter can only reach its full potential if the end device also supports this standard.
The physical design affects both handling and durability.
OTG is a specification that allows a host device (e.g., a smartphone) to act as a host for other USB devices. This means you can connect a USB drive to your phone and access the data directly. Before buying, you should check if your smartphone or tablet supports OTG functionality. Most modern devices do.
Based on technical specifications and intended use cases, we present three models below.
Product Specification Analysis This Samsung OTG adapter is designed as a compact, dongle-style solution. It enables the connection of USB-A peripherals to devices equipped with a USB-C port. Its plug-and-play functionality requires no additional software installation. According to the manufacturer, the adapter supports USB 3.0/2.0 data transfer speeds, depending on the host device.
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Product Specification Analysis The Tech-Protect UltraBoost is also a compact, dongle-style USB Type-C adapter. It supports the USB 3.0 standard, enabling a maximum data transfer rate of up to 5 Gbit/s, and provides a charging current of up to 2A for the connected peripheral. The product description highlights its compatibility with a wide range of accessories, including mice, keyboards, cameras, and game controllers.
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Product Specification Analysis This model from Ugreen is a short OTG cable with a length of 0.15 m. It connects a USB-C plug to a USB-A female port and supports the USB 3.0 standard for a maximum data transfer rate of 5000 Mbit/s (5 Gbit/s). The cable design offers flexibility and relieves stress on the device's port. According to the manufacturer, the adapter is backward compatible with USB 2.0, 1.1, and 1.0.
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The models presented cover common use cases. However, if you have specific requirements that are not met here—such as a different colour, a longer cable, or an adapter with multiple ports (a hub)—you can find a wider selection in our main category.
️ Discover more USB OTG Adapters in our overview
1. What does OTG mean on a USB-C adapter? OTG stands for "On-The-Go." It is a USB specification that allows mobile devices like smartphones or tablets to act as a host. This means the device can recognise and control peripherals such as USB drives, keyboards, or mice, much like a computer. A USB-C OTG adapter is the physical interface that enables this function.
2. How do I connect a USB drive to my phone? You will need an OTG-compatible USB-C to USB-A adapter and a smartphone that supports OTG. Plug the adapter's USB-C connector into your phone and the USB drive into the adapter's USB-A port. Your phone should automatically detect the external storage and display it in your file manager app, allowing you to access the files.
3. Can I charge my phone with an OTG adapter? No, a standard OTG adapter is not designed to charge the host device (your phone). Its primary purpose is data transfer and supplying power to the connected peripheral (e.g., an illuminated keyboard or an external hard drive). The power flows from the phone to the peripheral device.