Dell
Dell H240AS-00 240W SFF Power Supply
Dell's H240AS-00 provides stable 240W power delivery purpose-built for OptiPlex small form factor desktops.
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Overview
Reliable Power: Dell 3WN11 H240AS-00 240W Power Supply
The Dell 3WN11 H240AS-00 is a 240W ATX power supply designed for Dell OptiPlex systems. This power supply provides stable and efficient power delivery, ensuring reliable performance for your desktop computer.Specifications
- Brand: Dell
- Model: 3WN11 H240AS-00
- Power Output: 240W
- Form Factor: ATX SFF M-ITX
- Compatibility: Dell OptiPlex 390
Pros & Cons
👍 Pros
- Direct drop-in replacement for failed OptiPlex 390 SFF power supplies with no modification needed
- 240W output is well matched to the power demands of OptiPlex business desktop components
- Compact SFF form factor fits the tight chassis dimensions of Dell small form factor systems
- Dell OEM part ensures correct connector pinout and voltage rail configuration
👎 Cons
- Proprietary form factor is not compatible with standard ATX or other non-Dell cases
- 240W output limits upgradeability to low-power components only
- No modular cabling — all cables are fixed, which is standard for OEM supplies but limits flexibility
- Lacks 80 Plus efficiency certification branding common on aftermarket power supplies
Frequently Asked Questions
Which Dell systems is the H240AS-00 compatible with?
The H240AS-00 is designed for Dell OptiPlex 390 small form factor desktops. It may also fit other OptiPlex SFF models that use the same power supply form factor and connector pinout, but compatibility should be verified before purchasing.
Is this a standard ATX power supply that works in any PC case?
No. This is a Dell proprietary SFF (Small Form Factor) power supply with a specific form factor and connector layout designed for Dell OptiPlex systems. It will not fit standard ATX mid-tower or full-tower cases.
What is the power output of the H240AS-00?
The unit delivers 240 watts of total power, which is sufficient for the low-power components typically found in OptiPlex business desktops, including standard processors and basic graphics.
Can this power supply support a dedicated graphics card?
With only 240 watts of total output, this PSU is limited to low-profile, low-power graphics cards that draw power solely from the PCIe slot. It cannot support cards that require supplemental power connectors.
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