G-RAID thunderbolt 2 (0G04085) need compatible ac adapter

Hi - I’ve got a “G-RAID with Thunderbolt 2” box (part number 0G04085) but the ac adapter has been lost. Does anyone have an example of good one that provides the necessary 12v 5A - for North Americans style plugs? I can’t seem to find out which one was included in the original box.