I have a My Book AV (WDBABT0010HBK) but can’t find my ac adapter.
Is the input voltage 12 Vdc?
All WD Power Supplies are 12 Volts
you need to also know the Amps, Watts and Polarity (add WD PS are Tip +)
Which according to the WD HDD Power Supply List … the My Book AV is