1U × 2U Front Ends/Rectifiers (18/01/2006)... Unipower Corporation has introduced ultra-compact 1U × 2U front ends/rectifiers with output voltages of 48V DC or 54.4V DC at 550W, 24V DC or 27.2V DC at 500W, or 12V DC or 13.6V DC at 450W. The RSG Series are rectifier versions, while the ...