USB Power Delivery (USB PD) pass-through allows a compatible USB-C hub or dock to receive power from an external USB-C charger and supply some of that power to a connected computer. The hub or dock reserves power for its own operation, so the computer may receive less than the charger's rated output.

How Pass-Through Power Works

The charger connects to the hub or dock's designated PD input, and the hub or dock connects to a computer that supports charging through its USB-C port. The devices negotiate a supported power level. How much reaches the computer depends on the charger, cable, hub or dock, computer, and connected devices.

Example

The Plugable USBC-6950PDZ accepts up to 100W from a compatible USB-C charger and can provide up to 82W to the connected computer. These are two different ratings. A lower-wattage charger leaves less power available for the dock and computer to share.

Important Notes

• A 100W PD input rating does not mean the computer receives 100W. Check the maximum host charging output for the specific product.
• If the computer requires more power than the setup can provide, charging may be slow or the battery may discharge under heavy use.
• USB PD specifications allow up to 240W with compatible equipment. That is a specification maximum, not a capability shared by every USB-C product.

Need Assistance?

If you are unsure how much power a Plugable product can supply to your computer, contact support@plugable.com with the Plugable model, computer model, and charger wattage.