Power Supply Unit Inter-Tech Aspower R2A-DV0550-N 550 W

The Inter-Tech Aspower R2A-DV0550-N 550 W is a compact server power supply designed to deliver stable power for small rack or tower servers and workstations. The unit provides 550 W total output with 92% efficiency and an 80 PLUS Gold certification, ensuring reduced energy losses and reliable performance. It features a 20+4 pin ATX motherboard connector, dual 40 mm fans for active cooling and a stainless steel enclosure with dimensions of 100 mm (W) x 270 mm (D) x 84 mm (H).

Advantages

This power supply combines high efficiency and a small footprint to suit constrained server environments. The 80 PLUS Gold rating and 92% efficiency help lower power consumption and heat generation under typical loads. Two 40 mm fans provide directed airflow to critical components while the stainless steel housing offers mechanical durability. A mean time between failures (MTBF) of 100,000 hours indicates long-term reliability for continuous operation.

Suitable for

• Small rack or tower servers requiring a compact 550 W PSU
• Workstations with a 20+4 pin ATX motherboard connector
• Systems where energy efficiency and reduced heat output are important
• Environments needing a durable stainless steel PSU enclosure

Key specifications

• Total power: 550 W
• Efficiency: 92%
• Certification: 80 PLUS Gold
• Motherboard connector: 20+4 pin ATX
• AC input voltage range: 115–230 V
• Cooling: two 40 mm fans
• MTBF: 100,000 hours
• Dimensions: 100 mm (W) x 270 mm (D) x 84 mm (H)
• Weight: 2.55 kg
• Colour: Stainless steel

How to use

Install the Inter-Tech Aspower R2A-DV0550-N into a compatible chassis following standard PSU mounting procedures and the server or workstation manufacturer’s instructions. Connect the 20+4 pin ATX cable to the motherboard main power socket and attach any additional peripheral connectors required by drives or expansion cards. Ensure the AC input is set to an appropriate supply within the 115–230 V range and secure the unit to prevent vibration. Provide adequate airflow in the chassis so the twin 40 mm fans can maintain cooling.

Recommendations

Use the PSU in systems that match its power rating and connector type; avoid continuous loading above the rated capacity. Keep air intakes clear and perform periodic checks for dust accumulation on the fans and housing. For stable long-term operation, pair the power supply with components whose combined consumption remains within the 550 W total output and follow local electrical safety regulations when connecting to mains power.