No, the 4-in-1 USB-C Slim Multiport Adapter 4K does not need external power. The 4-in-1 USB-C Slim Multiport Adapter 4K is bus powered, which means it draws power from the connected computer.

To charge your laptop while using the 4-in-1 USB-C Slim Multiport Adapter 4K, connect a USB-C PD charger to the USB-C PD pass through port.

• USB-C PD port: up to 100W input and up to 80W output to your computer
• The 4-in-1 USB-C Slim Multiport Adapter 4K uses 15W for its own operation.