G-Speed - where can I buy replacement power supply?

I have a G-Speed with (4) 2TB HDD that will not power up and think it is due to failed power supply.
I tried to buy one off e-bay but it did not have correct wiring harness.
Where can I source a power supply that will work?
Can I buy a used G-Speed and just put my (4) 2TB HDD in it and retrieve my data?

Hi @valreynolds,

Please contact the WD Technical Support team for best assistance and troubleshooting:
https://support-en.wd.com/app/ask

I will contact them again but the first time all they did was keep telling me to get a power cord…