LENOVO - 03X4370 - Lenovo 550W 80+ Gold PSU

LENOVO 03X4370 550W 80+ Gold Power Supply Unit

The LENOVO 03X4370 is a 550W internal power supply unit with 80+ Gold efficiency, designed for dependable power delivery in Lenovo enterprise server environments. It is an ideal replacement PSU when maintaining uptime, standardising spares, or extending the lifecycle of existing Lenovo infrastructure in data centres, server rooms, and remote sites.

For broader platform maintenance, many teams source this PSU alongside other LENOVO components to keep fleets consistent and reduce time-to-repair. In rack deployments, it can also be paired with power distribution equipment such as PDU hardware to support clean, manageable power feeds at the rack level.

Key Features

Key technical characteristics and deployment benefits for the Lenovo 03X4370 PSU:

• 550W power output to support stable operation of compatible Lenovo server configurations.
• 80+ Gold efficiency rating to reduce power loss and heat generation in 24/7 environments.
• Compatible Lenovo server PSU option to maintain or restore OEM power specifications during repairs.
• Designed for use in select Lenovo System x/ThinkServer families to simplify parts standardisation across installed base (examples include Lenovo System x and ThinkServer platforms where 03X4370 is specified).
• Internal server PSU form factor to integrate cleanly into supported chassis without external power bricks.
• Enterprise-grade power design to help minimise unexpected shutdowns and protect component stability.
• Suitable as a spare PSU for maintenance providers to reduce downtime during field replacements.
• Efficient thermal profile (via 80+ Gold) to support overall chassis cooling strategy under load.

Refurbished Quality and Warranty

This unit is refurbished hardware, cleaned and tested by technicians before entering stock to help reduce the risk of hardware defects. Refurbished PSUs are a practical choice for extending the lifecycle of existing server platforms, controlling budget compared to buying new, and reducing electronic waste.

All products include a one-year warranty from the date of purchase (batteries, tape drives and tape libraries include a three-month warranty). Extended warranty options are available on request. For complete server maintenance builds, consider related Lenovo parts such as FAN modules for airflow management and a RAID CONTROLLER for resilient storage configurations.