External Model:WD25001032 Power Adapter

I have a model WD25001032 external drive. I need to know what to use for the power adapter.

Also, there is a place for a plug-in that is in the middle of the tag that displays a model number and serial number.

Also, was this old as a raid drive or is it just a straight drive. I’m not sure if the drive came with the drive installed or if the drive was installed by me. This is going back a few years but I need the data. It also has a large button in the middle of the front cover and what action will give me. Maybe I should be asking is there a manual for.