What are the operating power specifications for the docking station?
The docking station operates at 19.5V DC at 3.33A, which equals 65 watts. The AC power source should have a rated voltage range of 100–240V at 50–60 Hz. It is recommended to use only the AC adapter supplied and approved by HP for this device.
From the official HP Officejet 6950 All-in-One Printer manual, page 24
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