Using a Type-A Hub with Type-C Devices

Introduction

With the increasing shift towards USB-C as the universal standard for devices, many organisations and individuals are looking for ways to use existing USB-A hubs with newer USB-C-only devices. If you own a Type-A hub, you may be wondering whether simply purchasing USB-A to USB-C cables will allow you to fully manage and transfer data to new USB-C devices or if a dedicated USB-C hub is required.

Understanding USB-A to USB-C Connectivity

USB-A to USB-C cables are designed to allow backward compatibility between existing USB-A ports and newer USB-C devices. However, they come with certain limitations based on data transfer speeds, power delivery, and host-device communication.

Key Factors to Consider

One of the primary considerations when using USB-A to USB-C cables is data transfer and protocol support. USB-A to USB-C cables support USB2 or USB3 speeds, depending on their specifications. USB3 Type-A to Type-C cables should support 5 Gbps speeds if the host hub is compliant. However, some high-bandwidth functions, such as video output or high-speed data transfers, may be limited if the hub or cable do not support 10 Gbps data transfer.

Another factor is power delivery (PD). USB-A does not support USB Power Delivery (PD), meaning that while it can provide standard USB charging power (5 V / 900 mA and up to 3 A on some hubs for USB3), it won’t be able to deliver the higher voltages required for fast charging newer USB-C devices. If high power levels are required, the USB-A to USB-C cable might not be sufficient.

Additionally, device compatibility and host recognition must be taken into account. Some USB-C devices expect to be connected to a USB-C host with full USB-C negotiation (e.g., detecting a USB-C PD power source and alternate mode support), which a USB-A port cannot provide. Many USB-C devices use USB-C for both data and charging, but some tools might require a fully compliant USB-C connection.

Will a USB-A Hub Work with USB-C Devices for Data Transfers?

If you purchase USB-A 3.0 to USB-C cables, your hub should be able to communicate with USB-C devices, provided that they do not specially require a USB-C host for full functionality, the cables are properly designed for USB3 data transmission, and the software being used does not require a USB-C hub or PD capabilities.

Do You Need a USB-C Hub?

If you encounter connectivity issues or power limitations, you may need a USB-C hub. A USB-C hub will allow USB-C devices to connect to a fully compliant port, enable full power delivery (PD) for charging, ensure high-speed data transfer if the process requires it, and support synchronisation.

For communication with devices such as mobile phones and tablets, the majority maintain backward compatibility and function with USB-A to USB-C connections without issues.