Replacement 520W Server Power Supply for 3Y YH-6521B / YM-6521B / YM-6521BAR / YH6521-XBAR

Compatible replacement power supply unit (PSU) delivering 520W output for 3Y server models YH-6521B, YM-6521B, YM-6521BAR and YH6521-XBAR. Designed as a direct-fit swap to restore reliable power to systems using these exact model numbers. Ideal for server maintenance and repairs where a 520W PSU is required — verify model compatibility prior to installation.