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Can You Use a USB Hub as a Power Supply? Here's What You Need to Know

by MoMo 14 Jan 2025
Can You Use a USB Hub as a Power Supply? Here's What You Need to Know

 

 

Friends who are about to buy a USB hub often have this question: Can a USB hub charge a phone? Especially when traveling, when the phone battery is low, many people wonder if they can use a USB hub as a charger. So, can you use a USB hub as a power supply? This article uses Apple's latest iPhone 16 as an example to answer this question.

Basic Knowledge of USB Hubs and Power Supplies

USB hubs primarily function as connection enhancers, expanding the number of USB ports on a laptop or desktop. They are generally divided into two types:

   Bus-powered hubs: These hubs draw power from connected devices (such as computers).

   Self-powered hubs: These come with an external power supply and can provide additional power to connected devices.

Understanding the difference between these two types is essential when determining whether USB hubs can be used as power supplies.

Can USB Hubs Power Devices Such as the iPhone 16?

In short: Yes, but there are limitations. Self-powered USB hubs can provide power to connected devices, but the charging speed and reliability depend on the hub's power output and the device's needs. The iPhone 16, equipped with advanced fast charging technology, performs better with high-power chargers, which many USB hubs may not support.

Considerations When Charging with a USB Hub

If you plan to use a USB hub to charge the iPhone 16 or other devices, consider the following factors:

  • Power Delivery (PD) Support: Choose a hub with Power Delivery capabilities to ensure efficient charging for high-demand devices.
  • Power Output: Check the hub's maximum power output. The iPhone 16 requires at least a 20W charger for optimal performance.
  • Port Compatibility: Ensure the hub includes a USB-C port, as the iPhone 16 relies on this standard for faster charging speeds and data transfer.

Limitations of Using a USB Hub as a Power Source

While USB hubs can handle basic charging needs, they are not a complete replacement for dedicated chargers. Here’s why:

  • Limited Power Output: Most USB hubs have a maximum power output of 10-15W per port, which does not meet the fast charging needs of the iPhone 16.
  • Device Priority Issues: Some hubs prioritize connected peripherals' power needs over charging, resulting in slower power delivery.
  • Safety Concerns: Low-quality hubs may lack essential protections, increasing the risk of overheating or device damage.

For devices like the iPhone 16, dedicated fast chargers remain the best option for reliable and safe power delivery.

Ideal Solution: Multi-Port USB Hub with PD Capabilities

If you want to use a USB hub with charging capabilities, consider a premium option like the Dockteck 5-in-1 USB-C Multiport Adapter. This USB-C Multiport Adapter offers:

  • Up to 100W of Power Delivery, ideal for charging the iPhone 16 while supporting other devices.
  • Compatibility with high-performance devices such as the MacBook Pro M4.
  • Multiple ports for seamless connectivity, including HDMI, Ethernet, and USB-A.

Conclusion

Can a USB hub charge a phone? The answer is clear: while a USB hub can act as a power source, its efficiency depends on the hub's specifications and the device's power needs. For the iPhone 16, choosing a high-quality hub with Power Delivery ensures efficient charging and extended connectivity. However, for optimal performance and safety, a dedicated fast charger remains the preferred choice.

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