The Delta Electronics DPS-200PB-135 A is a tested computer power supply unit (PSU) designed by the well-known brand Delta. This power module unit is specifically manufactured by Delta Electronics and is known for its reliability and performance in providing power to computer systems. With its model number DPS-200PB-135 A, this PSU is a crucial component for ensuring the optimal functioning of a computer system. Tested light came on fan turned on.