Power supply Lenovo 180W Small Form Factor 5P51D76945

The Lenovo 180W Small Form Factor power supply provides 180 watts of DC output for compatible Lenovo small form factor desktops. Designed as a direct replacement or spare part, it offers stable power delivery to essential system components and helps maintain system reliability during everyday office and home use. The unit fits supported compact chassis and is intended for users who need a straightforward, OEM-compatible power source without altering system configuration.

Advantages

This power supply delivers consistent 180W output suitable for standard small form factor systems, ensuring steady operation of CPU, storage and peripheral devices. As a purpose-built replacement part for compatible Lenovo desktops, it simplifies repairs and maintenance while preserving original system characteristics. The compact design is optimized for limited internal space and supports straightforward installation in supported chassis.

Suitable for

• Replacing a failed or degraded power supply in Lenovo small form factor desktops
• Keeping a spare unit for quick maintenance and system uptime
• Office computers performing standard productivity tasks
• Home PCs used for web browsing, media playback and light multitasking

Key specifications

• Output power: 180 watts DC
• Form factor: Small form factor (SFF) compatible
• Intended use: OEM replacement for compatible small chassis desktops
• Cooling: internal fan-assisted cooling (standard for SFF PSUs)
• Connectors: built to match original equipment internal power connectors for supported models

How to use

Install the power supply by first powering off the desktop and disconnecting all cables from mains supply. Open the supported small form factor chassis according to the manufacturer's service instructions, disconnect the old unit from internal connectors, and remove it. Position the Lenovo 180W Small Form Factor power supply in the designated bay, connect all internal power connectors securely, fasten mounting points, and close the chassis. Reconnect external cables and power on the system to verify proper operation. Follow electrostatic discharge (ESD) precautions and consult your desktop service manual if unsure about connector alignment or installation steps.

Recommendations

Use this power supply only in compatible Lenovo small form factor systems; verify chassis compatibility and connector types before purchase. Ensure adequate ventilation around the chassis to maintain cooling efficiency and periodically inspect power connections for secure seating. If the system exhibits instability after installation, recheck connections and consult technical support or a qualified technician.