Replacement 300W Switching Power Supply (PSU) for ST-300U1A & ST-300UAG-05E

Direct replacement power supply for 300W switching units. This PSU is compatible with models ST-300U1A and ST-300UAG-05E, making it suitable as a spare or repair part for systems that use a 300W switching power supply. Designed to be a straightforward swap-in for the listed models.