The Thunderbolt 4 Dock includes a 135W power supply.

Of that 135W, up to 96W is delivered to charge the connected host device through the Thunderbolt 4 host port (PD, or Power Delivery, at 96W). The remaining power runs the dock itself and supplies the connected peripherals through the downstream Thunderbolt 4 ports.

If you need a replacement power supply, it must meet these specifications for proper and safe operation:

• Output: at least 135W
• DC input voltage: 20V
• Barrel connector size: 7.4 mm outer diameter and 5.1 mm inner diameter

For a genuine replacement adapter, please contact Satechi Support.