QNAP Power Supply for 4-Bay NAS

The QNAP SP-4BAY-PSU is a 250 watt internal power supply created for select QNAP four bay NAS and NVR systems. It delivers stable, efficient power that keeps drives spinning, processors working, and data flowing without interruption.

This unit installs directly into the 1U rackmount chassis used by many Intel based QNAP models and connects to mains electricity with a standard IEC C13 cable, so no special adapters or rewiring are required. Once in place, it provides the consistent voltage your NAS needs to support both core operations and any add-on components.

Compatibility includes well-known models such as the TVS-882ST2, TS-439 Pro series, TS-453 Pro, TS-853S Pro, and other supported four bay systems. Whether the appliance handles shared files, surveillance footage, or virtual machines, the SP-4BAY-PSU integrates cleanly and restores factory-level reliability.

Keeping a spare on the shelf is an easy way to minimise downtime for data centres, branch offices, and home labs. If the original power supply falters, you can swap in the SP-4BAY-PSU within minutes and bring your storage back online without waiting for parts or the arrival of a technician.

For administrators who value uninterrupted service and straightforward maintenance, this replacement or backup power supply offers practical assurance that supported QNAP NAS units will stay ready for the workloads you rely on every day.

• 250 watt built in AC power supply for QNAP four bay NAS and NVR units
• Standard IEC C13 input connector for easy integration into existing racks
• Fits the 1U rackmount chassis used by Intel based QNAP models
• Compatible with TVS-882ST2, TS-439 Pro series, TS-453 Pro, TS-853S Pro, and additional supported systems
• Ideal as a direct replacement or standby unit that reduces downtime