Power supply Dell 260W for tower systems, model 3YNRJ

Dell 260W power supply (model 3YNRJ) is an internal replacement PSU designed for compatible Dell tower desktop systems. It delivers a fixed 260-watt output to power CPU, storage drives and peripheral cards while maintaining stable voltages and system reliability. The unit is intended for use in repairs, upgrades or as a spare part to restore or extend the operational life of compatible Dell tower systems.

Advantages

The power supply provides a consistent 260W output with built-in protections against overcurrent and short-circuit conditions, supporting steady operation under typical desktop loads. Its internal form factor is matched to compatible tower chassis for straightforward installation, and using an OEM-compatible unit preserves system compatibility and BIOS power management behavior. The compact design supports efficient airflow within the case to help manage operating temperatures.

Suitable for

• Replacing a failed internal PSU in compatible Dell tower desktops
• Repairing systems after power-related failures
• Upgrading or stocking spare parts for IT maintenance
• Restoring systems used for office work, light workstation tasks or small server roles

Key specifications

• Rated output power: 260 watts
• Form factor: internal tower power supply compatible with specific Dell chassis
• Outputs: multiple standard DC rails to supply motherboard, CPU, storage and peripherals
• Protection features: overcurrent and short-circuit protection
• Cooling: case-integrated fan or passive airflow design suited for tower enclosures
• Connectors: standard internal power connectors for motherboard and drives (matching compatible Dell tower layouts)

How to use

Before installation, disconnect the system from mains power and discharge residual charge by pressing the case power button after unplugging. Open the tower chassis according to the system service manual, remove the existing power supply mounting screws and disconnect all internal power connectors from the motherboard, drives and peripherals. Install the replacement unit in the same orientation, secure it with mounting screws, and reconnect the power cables to the corresponding motherboard and drive connectors. Close the chassis, reconnect mains power and verify system POST and stable operation.

Usage recommendations

Use this Dell 260W PSU in systems that explicitly support this form factor and power rating. Verify connector compatibility and firmware requirements before installation. Ensure adequate case airflow and avoid exceeding the rated total system power draw. For safety, perform installations in a static-free environment and follow manufacturer service instructions.