Power Supply Unit Lenovo 500W ATX model 5P51D77197

Lenovo 500W ATX power supply unit provides up to 500 watts of DC power for compatible desktop systems. Designed to fit ATX enclosures, this PSU supplies stable power rails for the processor, motherboard and peripheral components. It is intended as an OEM-form-factor replacement or upgrade to restore or maintain reliable operation in Lenovo-compatible desktop systems that require a 500W ATX unit.

Advantages

The unit offers a compact ATX form factor that fits standard desktop chassis and provides multiple output rails to support CPU, motherboard and peripheral devices. Built to Lenovo specifications, it delivers consistent voltage regulation and integrated protection against common electrical faults. Its rated 500W continuous output is suitable for mainstream office and light multimedia configurations that need a dependable OEM-style power source.

Suitable for

• Replacing a failed or noisy ATX power supply in a Lenovo-compatible desktop
• Upgrading a system to ensure stable 500W power delivery for CPU and GPU of entry-level to mid-range configurations
• Repairing desktop PCs during maintenance or refurbishment

Key specifications

• Form factor: ATX standard
• Maximum continuous output power: 500 W
• Output rails: multiple DC rails for motherboard, CPU and peripheral connectors
• Compatibility: designed for Lenovo desktop systems using ATX PSU mounts and connections
• Built-in electrical protections: over-voltage and short-circuit protection (integrated by design)
• Cooling: internal fan for thermal management

How to use

Power down the desktop, disconnect the mains cable and any external peripherals before beginning. Open the chassis following the manufacturer’s service instructions, remove the existing ATX power supply by disconnecting all motherboard and peripheral connectors, and unscrewing mounting points. Install the Lenovo 500W ATX unit into the standard PSU bay, secure it with screws, and reconnect the 24-pin motherboard connector, CPU power connector and peripheral power leads in their correct positions. Verify that all connectors are seated and routed to avoid obstructing case airflow, then close the chassis and reconnect the mains. Power on the system and confirm normal POST and voltage stability using system monitoring tools if needed.

Usage recommendations

Use this PSU in systems with matching ATX mounting and connector requirements. Ensure the total system power draw stays within the 500W rating, and allow adequate case airflow around the PSU. For safety, perform installation with the machine unplugged and, if uncertain, have the replacement carried out by a qualified technician.