CUI Global, Inc. announced that Jim O'Neil, a veteran executive of the power industry and former CEO of Quanta Services, Inc. (Quanta), has joined the company's board of directors as Vice-Chairman and Lead Independent Director effective immediately. The size of the Company's board will increase from 5 to 6 members. During his 17-year tenure with Quanta, nearly five of which as chief executive officer, Mr. O'Neil grew Quanta into a Fortune 500 enterprise with more than $7.0 billion in annual revenue at its peak through both organic growth and numerous strategic acquisitions.