This is a radio power supply and looks a lot like the Alinco DM-330FXE found at
http://www.andrewscom.com.au/power-supplies
There may be other suppliers and this supply may be sold under other names as it appears similar to the Nevada one.
You may not need such power and check too on any supply that you are looking at as most radio ones will be 13.8V fixed and regulated at that level. If you must not exceed 12V then you may need a step down converter (also regulated).