- Free 30-day Returns
Meet Your Seller
240W SFF Desktop Replacement Power Supply PSU Compatible with Dell Optiplex 390 790 990 960 7010 9010 3010 Small Form Factor, H240AS-00 H240AS-01 D240ES-00 H240ES-00 L240AS-00, P/N 3WN11 PH3C2 2TXYM 7
- 240W dedicated small form factor PSU for Dell Optiplex classic SFF office desktops
- Fully interchangeable with OEM models H240AS-00, H240AS-01, D240ES-00, H240ES-00, L240AS-00 and listed Dell part numbers
- Full safety protection: overvoltage, overload, overheat, overcurrent & short-circuit auto power cutoff
- Low-noise cooling fan with optimized heat dissipation for long-hour daily office continuous operation
- Same mounting size, screw holes and connector pinout as original unit, plug-and-play direct swap
Any questions? Our AI beta will help you find out quickly.
This brand-new 240W small form factor power supply is a perfect OEM replacement for Dell Optiplex SFF desktop models including 390, 790, 990, 960, 7010, 9010 and 3010. It directly replaces factory PSU variants H240AS-00, H240AS-01, D240ES-00, H240ES-00, L240AS-00 and matches Dell official part numbers 3WN11, PH3C2, 2TXYM, 709MT.
Made of high-quality stable internal electronic components, this PSU delivers low-ripple consistent clean power to safeguard motherboard, CPU, memory and storage hardware under daily multitasking office loads. Built-in intelligent multi-protection circuits automatically shut down power supply once abnormal voltage, overload or overheating is detected to avoid permanent hardware damage.
Equipped with silent high-efficiency cooling fan and compact heat sink structure, it rapidly exhausts internal heat inside narrow SFF chassis while maintaining quiet running noise suitable for office environments. All wiring interfaces and installation dimensions strictly comply with Dell original factory standards, enabling fast simple replacement without wiring modification or extra adapters. Every unit passes rigorous factory aging, voltage stability and safety testing before shipment, meeting OEM reliability standards for corporate computer maintenance and defective SFF power supply replacement.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by TechCore Supply Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory













