Make sure to get the full apex or you will also need a VDM module in order to control your lights. Check out the unofficial users guide for guidance on any question you may have as far as setting up your Apex. Connecting the Apex to meanwell's etc., can be found starting at page 69 for instructions. http://reeftech.webs.com/Apex%20New%20User%20Guide.pdf
Cheers,