This power supply unit has a maximum output power of 350W and is compatible with various models of the HP Pavilion Slimline FH-ZD221MGR series, including 633195-001, 633196-001, 633193-001, DPS-220AB-6, PS-6221-9. The package includes all necessary connectors such as 24-Pin ATX Connector (1), 4-Pin 12V Connector (1), SATA Connectors (2). It features over current protection (OCP), over voltage protection (OVP), short circuit protection (SCP) and over temperature protection (OTP) to ensure safe and stable operation. It is recommended to check the specifications of your computer before purchasing to ensure compatibility. With this power supply unit, you can be assured of reliable and efficient performance for your HP DPS-220AB-6 A PS-6221-9 PC power supply.