Which AC power to use

I have a WD Elements MDL WD6400EB035-01  S/N .  I had to change and move computers and I forgot to mark the AC adapters.  I am trying to figure out which AC adapter works with which Hard Drive.  Can yanyone help?   I have a ITE Switching Power Supply Model  S018BU1200150 S/N T001U089210000988 and a Bestec  Power Supply Model BPA-201S-12 S/N 012071413

See if this helps  http://wdc.custhelp.com/app/answers/detail/a_id/1378/session/L3RpbWUvMTMyMDE3MTc3OS9zaWQvak9TMVcxSWs%3D

Joe

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Thanks, tried to get this from WD, but wasn’t sure I got right answer.  They siad they didn’ go back that far.