Dell 240W Small Form Factor Power Supply with Active PFC (1N56T)

For IT technicians and system integrators servicing Dell OptiPlex Small Form Factor desktops, this 240W power supply restores reliable operation to compact business PCs. It fits OptiPlex 3020, 7020, 9020, 3040, 5040, and 7040 SFF models, delivering stable power in office and enterprise environments.

Key specifications

• Power output: 240 W
• Form factor: Small Form Factor (SFF)
• Input voltage: 100-240 V AC
• Input frequency: 50/60 Hz
• Power Factor Correction: Active PFC
• Main motherboard connector: 8-pin Dell proprietary
• CPU power connector: 4-pin ATX
• SATA power connectors: 3
• Peripheral (Molex) power connectors: 1
• Cooling: Internal fan

Why choose it

This unit is built to Dell's OEM specifications, ensuring compatibility and reliable power delivery. Active PFC improves energy efficiency and reduces harmonic distortion, while the internal fan maintains optimal operating temperatures.

Ideal use cases

• Replacing a failed or failing power supply in Dell OptiPlex SFF desktops
• Maintaining consistent power for business workstations and office PCs
• System upgrades requiring a reliable 240W SFF power source

Good to know

Dell part numbers for this power supply include 1N56T, H240AS-00, L240AS-00, AC240AS-00, D240ES-00, and H240ES-00. It is manufactured by Delta Electronics, among other OEM suppliers.