What are the power specifications for the Photosmart 7520?
The power adapter model is 0957-2304 with an input voltage of 100-240 Vac, input frequency of 50/60 Hz, and maximum input current of 0.9A. You should use this printer only with the power adapter supplied by HP.
From the official HP Photosmart 7520 E All-in-One Printer manual, page 3
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