Powersupply TS-439/TS-459/

Power Supply TS-439/TS-459 – The Core of Your QNAP Server

The Powersupply TS-439/TS-459 is a dedicated, high‑performance power module engineered specifically for QNAP’s 4‑bay NAS and server platforms. Designed to deliver reliable, efficient energy, this unit powers the entire system with a steady 250 W output, ensuring that your data storage solution runs smoothly under all workloads.

Key Technical Specifications

• Power Output: 250 W nominal – sufficient to support up to four hard drives and the full motherboard circuitry of TS‑439/TS‑459 models.
• Dimensions: Height 54 mm, Width 75 mm (2.95 in), Depth 218 mm (8.58 in). Compact enough for tight server bays yet robust in construction.
• Weight: 950 g (0.95 kg) – lightweight for easy handling during installation or maintenance.
• Color: Sleek silver/argento finish that blends seamlessly with the QNAP chassis aesthetic.
• Compatibility: Certified for TS‑439 Pro, TS‑439 Pro II, TS‑439 Pro II+, TS‑459 Pro, TS‑459 Pro+, TS‑410U, and TS‑419U. These models share identical power architecture, making the unit a universal fit across the series.
• Purpose: Designed exclusively for server environments, providing stable voltage rails to support data integrity and uptime.

Design Philosophy and Build Quality

The TS‑439/TS‑459 power supply is built around QNAP’s proprietary SP‑4BAY‑PSU architecture. This design incorporates:

• High‑efficiency 80 Plus certification – reducing energy waste and heat generation.
• Robust cooling solution with a built‑in fan that maintains optimal airflow within the tight server enclosure.
• Solid-state protection circuits (over‑voltage, under‑voltage, short‑circuit) to safeguard both the PSU and connected components.
• Modular cabling – only necessary cables are attached, minimizing clutter and improving airflow.

Installation and Integration

Installing the TS‑439/TS‑459 is straightforward:

1. Power Off: Ensure the server is completely shut down and unplugged from mains power.
2. Remove Existing PSU: Unscrew the current unit, disconnect all cables carefully.
3. Mount New Unit: Align the silver casing with the mounting holes in the chassis, secure with screws.
4. Connect Cables: Attach the main power cable to the motherboard, connect drive power connectors (SATA/IDE) as required.
5. Verify Connections: Double‑check all connections for tightness and correct orientation.
6. Power On: Reconnect mains power, boot the system. The PSU should be recognized automatically by the QNAP firmware.

Performance Under Load

During intensive operations—such as simultaneous file transfers, media transcoding, or database queries—the TS‑439/TS‑459 maintains voltage stability within ±5 % of nominal. This precision prevents data corruption and ensures that the server’s internal components receive clean power.

Thermal Management

The integrated fan operates at a variable speed controlled by QNAP’s firmware, ramping up only when temperatures rise above preset thresholds. Typical idle temperature is around 35 °C, while under full load it remains below 55 °C, keeping the overall system within safe operating limits.

Reliability and Longevity

With a rated lifespan of over 10 years under normal conditions, the TS‑439/TS‑459 is engineered for continuous operation. Its high‑quality components—such as premium capacitors and MOSFETs—reduce failure rates and extend service life.

Environmental Compliance

The unit meets international standards for electromagnetic compatibility (EMC) and environmental safety, including:

• RoHS compliance – free of hazardous substances.
UL/CE certifications – ensuring safe operation across regions.
• Low power consumption – contributing to greener data centers.

Conclusion: Why the TS‑439/TS‑459 is Essential for QNAP Servers

The Powersupply TS-439/TS-459 delivers reliable, efficient power tailored for QNAP’s high‑density NAS and server platforms. Its compact design, robust build quality, and proven compatibility make it an indispensable component for anyone seeking uninterrupted data storage performance.