Power supply Dell 265W ATX model 9D9T1, 265W output, ATX form factor

The Dell 265W ATX power supply model 9D9T1 delivers a stable 265-watt output in a standard ATX form factor. Intended for compatible Dell desktop systems, this PSU provides the required voltages to the motherboard, processor, storage devices and expansion cards to restore or maintain reliable system operation. The unit is suitable for replacing a failed power supply or returning a system to its original power capacity during repairs or upgrades.

Advantages

This ATX power supply offers a consistent 265W continuous output with standard ATX connectors for straightforward installation in supported desktops. The compact ATX form factor ensures mechanical compatibility with many Dell chassis designed for this power profile. Built to deliver stable voltages and protection for connected components, the unit helps reduce downtime when a replacement is needed. The design emphasizes compatibility and practical replacement of original equipment without requiring additional adapters or modifications.

Suitable for

• Replacing a faulty or failing power supply in compatible Dell desktop systems
• Restoring original power capacity after hardware upgrades or repairs
• Home or office desktop computers that require a 265W ATX power source
• Technicians servicing Dell systems that use standard ATX power modules

Key specifications

• Output power: 265 watts continuous
• Form factor: ATX
• Output voltages: standard ATX rails to supply motherboard and peripherals
• Connector types: standard ATX power connectors for motherboard and peripheral devices
• Cooling: internal fan (device-integrated cooling for typical desktop operation)
• Intended use: desktop system power supply for compatible Dell models

How to use

Power off the desktop and disconnect the system from mains power before attempting replacement. Open the chassis following the system or service manual instructions, locate the existing power supply, and disconnect all power connectors from the motherboard, drives and peripherals. Remove the old unit from its mounting points, install the Dell 265W ATX power supply in the same orientation, and secure it using the original fasteners. Reconnect the motherboard 24-pin and CPU power connectors along with any peripheral power leads, verify all connections are seated correctly, close the chassis, and reconnect mains power. Power on the system and confirm stable boot and component operation.

Usage recommendations

Use this power supply only in compatible Dell desktop models and ensure the system BIOS and firmware are up to date where required. Verify that total system power consumption does not exceed the 265W rating. For safety, perform installation in a static-free environment and, if unsure, have the replacement performed by qualified service personnel.