Anyone know the power supply specs for WD20000H2U-00 (the black my mirror)?

WD External Drives External Drives for PC
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Lost my power supply when I moved - - does anyone know the correct specs for WD20000H2U-00 (the black my mirror)? TIA

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http://wdc.custhelp.com/app/answers/detail/a_id/1378

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Thread moved to WD External Drives: My Book for PC.

Regards,