Summary

If your Plugable docking station isn't charging your laptop, there are several possible causes. Not all docking stations support laptop charging, and even those that do require a compatible laptop, a USB-C connection, and an adequate power source.

Common causes include insufficient Power Delivery (PD) wattage, an incompatible USB-C port or cable, incorrect power connections, or laptop-specific charging settings.

This article explains how to identify the cause and troubleshoot charging issues with your Plugable docking station.

Applicable To

• Plugable USB-C and Thunderbolt docking stations that support USB Power Delivery (PD)
• Plugable docking stations and hubs with USB-C PD passthrough charging
• Compatible laptops that support charging through USB-C or Thunderbolt

Charging capabilities and requirements vary depending on the docking station and laptop model.

Check if Your Dock Supports USB-C Power Delivery

Not all Plugable docking stations are designed to charge the connected laptop. Docking stations generally fall into three categories:

• Built-in Power Delivery (PD): These docking stations include a dedicated AC power adapter and can provide charging power to compatible laptops. The maximum charging wattage varies by model. A list of Plugable docking stations with built-in Power Delivery can be found here.

• PD Passthrough: These docking stations and hubs require a separate USB-C PD charger connected to a designated power input port. A portion of the charger's power may be reserved for the hub and connected devices, reducing the wattage available to the laptop. A list of Plugable docking stations with PD passthrough can be found here.

• Host Charging Unsupported: Some docking stations provide display expansion, USB connectivity, or other peripheral functions but do not support charging the connected laptop.

Check your Plugable docking station's product specifications to confirm whether it supports laptop charging and the maximum wattage it can provide.

Verify the Dock's Power Source

For a docking station to charge your laptop, it must receive adequate power.

Check the following:

• Built-in PD docking stations: Confirm that you are using the original Plugable AC power adapter and that it is securely connected to the docking station and a working power outlet.

• PD passthrough docking stations: Confirm that a compatible USB-C PD charger is connected to the dock's designated PD input port.

• Charger wattage: Verify that your charger provides enough power for both the docking station and your laptop's charging requirements.

• Power indicators: If your docking station includes a power indicator, confirm that it shows the dock is receiving power, as described in the product documentation.

An insufficient power source may cause the laptop to charge slowly, display a power warning, or fail to charge.

Use a Compatible USB-C Host Cable

An incompatible or damaged USB-C cable can prevent a docking station from charging your laptop, even if other docking station functions appear to work.

Check the following:

• Use the original USB-C or Thunderbolt host cable included with your Plugable docking station whenever possible.

• If using a replacement cable, confirm that it supports the required USB Power Delivery wattage and data or Thunderbolt capabilities for your docking station.

• Avoid using a USB-C to USB-A cable, as this connection does not support USB-C PD laptop charging.

• Inspect the cable and connectors for damage or loose connections.

Not all USB-C cables have the same capabilities. A cable may support charging but lack the data or video capabilities needed for full docking station functionality.

Confirm Your Laptop Supports USB-C or Thunderbolt Charging

Even when your docking station supports Power Delivery, your laptop must also support receiving charging power through the connected USB-C or Thunderbolt port.

Common compatibility limitations include:

• Some USB-C ports support data and video but do not support USB-C PD charging input.

• Some laptops only accept USB-C charging through specific ports.

• Certain gaming laptops, mobile workstations, and enterprise systems require a proprietary charging connection or a higher power input than the dock can provide.

Check your laptop manufacturer's specifications or user manual for USB-C charging or Power Delivery input support.

If your laptop does not support charging through its USB-C or Thunderbolt port, you will need to continue using its original power adapter.

Try a Power Reset

Sometimes, a temporary USB Power Delivery negotiation issue between the laptop and docking station can prevent charging.

To reset the connection:

1. Disconnect the docking station from your laptop.
2. Disconnect the docking station from its power source.
3. Wait 30–60 seconds.
4. Reconnect power to the docking station first.
5. Reconnect the docking station to your laptop using the appropriate host cable
6. Check whether the laptop begins charging.

If the issue was caused by a temporary connection or Power Delivery negotiation problem, restarting the connection may restore normal charging.

Check Your Laptop's Charging Settings

Some laptops include battery health or charging management features that intentionally limit charging to help preserve long-term battery health.

Depending on the laptop manufacturer, these settings may prevent the battery from charging beyond a specified percentage, such as 60% or 80%.

If your laptop reports "Plugged in, not charging" or stops charging at a consistent battery percentage, check the manufacturer's battery management software or system settings.

A configured charging limit does not necessarily indicate a problem with the docking station.

Update System Drivers and Firmware

Outdated system firmware or USB-C and Thunderbolt controller software can sometimes contribute to charging or connection issues.

Check your laptop manufacturer's support website for available updates to:

• System BIOS or UEFI firmware
• USB-C controller drivers or firmware
• Thunderbolt drivers or firmware, if applicable
• Manufacturer-specific power management software

Follow the laptop manufacturer's instructions when applying firmware updates.

Compare Your Laptop's Power Requirements

If your laptop requires more power than the docking station can provide, it may charge slowly, maintain its current battery level, or continue discharging during demanding workloads.

To verify your power requirements:

1. Check the wattage listed on your laptop's original power adapter.
2. Check the maximum host charging wattage supported by your Plugable docking station.
3. Compare the two values and determine whether the docking station provides sufficient power for your laptop's needs.

For example, a laptop that normally uses a 140W power adapter may not receive enough power from a docking station that provides up to 100W of USB-C Power Delivery.

Some high-performance laptops can operate with lower-wattage charging sources but may charge more slowly or discharge under heavy use.

If your laptop requires more power than the dock can provide, consider using the laptop's original charger alongside the docking station, provided your laptop supports that configuration.

For additional information, see:

Overcoming Power Challenges: Efficiently Charging High-Demand Laptops While Docking

Important Notes

• Not all docking stations support host charging. Confirm your Plugable product's charging capabilities before troubleshooting.

• USB-C does not guarantee charging support. The laptop's connected USB-C port must support the appropriate charging input.

• Power Delivery wattage varies by product. The maximum power available to the laptop depends on the dock, power adapter, cable, and laptop's charging capabilities.

• PD passthrough hubs may reserve power. A hub that accepts a 100W charger may deliver less than 100W to the laptop because some power is reserved for the hub and connected devices.

• Charging behavior can vary by laptop. Battery management settings, manufacturer-specific power requirements, and system workload can affect charging performance.

• Docking functionality and laptop charging are separate. A compatible dock may still provide displays, USB devices, Ethernet, and other supported functions even when the laptop requires its original charger.

Need Assistance?

If your Plugable docking station still isn't charging your laptop after completing these checks, please contact Plugable Support at support@plugable.com.

When contacting support, please include:

• Your Plugable docking station model
• Your laptop manufacturer and model
• The wattage of your laptop's original charger
• The power adapter and host cable being used with the docking station
• Any charging warnings or unexpected battery behavior
• A brief description of the troubleshooting steps you have already completed
  
  

This information will help our support team identify potential compatibility or power delivery issues and recommend the appropriate next steps.