Search  for anything...
S-Union

S-Union 240W Power Supply Unit Replacement for Dell OptiPlex 390 790 960 990 3010 9010 Small Form Factor System SFF H240AS-00 H240AS-01 H240ES-00 D240ES-00 AC240AS-00 AC240ES-00 L240AS-00 PH3C2

    • Based on 798 reviews
Condition: New
Checking for product changes
$29.99 Why this price?
Save $34.99 was $64.98

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 2
Order within 8 hours and 10 minutes
Available payment plans shown during checkout

Recently Viewed

Features

  • Compatible ModelThe power supply only works for Dell OptiPlex 390 790 7010 9010 Desktop PC (Dell SFF system). AC Input: 100-240V/4A (50-60HZ), DC Output: Maximum Output Power: 240W
  • NOTEPower supply does not work for Dell Mt Mini Tower, DT Desktop System, USFF Ultra Small Form Factor Systems.
  • Compatible Part Number3WN11 709MT 592JG 66VFV CCCVC RV1C4 J50TW 2TXYM
  • Compatible Model NumberH240AS-00, AC240AS-00, L240AS-00, AC240ES-00, H240AS-00, H240ES-00, D240ES-00, DPS-240WB
  • Quality ServiceIf the product has any quality problems within one month, you can contact us quickly by email and we will provide you with a free return service.

Model Name: ATX Power Supply


Brand: S-Union


Compatible Devices: Personal Computer


Connector Type: ATX


Output Wattage: 240 Watts


Form Factor: ATX


Wattage: 240 watts


Cooling Method: Air


Item dimensions L x W x H: 9.9 x 3.6 x 4.4 inches


Power Supply Design: Full Modular


Brand: ‎S-Union


Series: ‎ATX Power Supply


Item model number: ‎H240AS-00 H240AS-01 AC240AS-00 3WN11


Item Weight: ‎2.02 pounds


Product Dimensions: ‎9.9 x 3.6 x 4.4 inches


Item Dimensions LxWxH: ‎9.9 x 3.6 x 4.4 inches


Color: ‎white


Manufacturer: ‎S-Union


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎May 12, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great power supply, insallation was easy and fixed the issue
I received a Dell PC that wouldn't turn on at all, it was flashing the power light on the front. I replaced the power supply with this unit and it immediately worked just fine. The installation was pretty easy and it fit in place without issue. So far it works properly and I haven't noticed any issues. ... show more
Reviewed in the United States on April 18, 2024 by Dfordium
    • A pefect match for my computer.
It was a simple install using common sense that took less than 10 minutes start to finish. I turned the computer on and it worked. It has been working steadily for almost a week with no problems.
Reviewed in the United States on October 2, 2024 by Amazon Customer
    • Perfect replacement for our Dell Optiplex 390 and 790 computers
Certain models of Dell computers have gained a reputation for being built with less than quality power supplies which can fail without warning, leaving your business short a workstation. This replacement can save the day, and even someone with minimal experience inside a computer can swap it out for the faulty one in about an hour. If you have an experienced IT person available, it will not take long at all. Almost all of our Dell Optiplex 390 and 790 computers have had their power supplies fail now, so we keep one of these replacements on hand at all times so we don't have to go more than an hour without a machine. It's cheap insurance. We have not had a replacement fail yet- it's always the original we're taking out of a dead computer. How do we know when the power supply is the issue? First, it's one of our older Dells that isn't working, usually an Optiplex 390 or 790. Second, the computer was working fine yesterday, and today nothing happens when we push the power button. No fan, no lights, no beeps... just nothing, and all the cables are plugged in snugly and there's power to whatever surge strip or UPS it's plugged into. Sure, there are other things it might be, but so far a bad power supply has always been the culprit. I've replaced two of them myself. I have just enough experience inside computers to identify most of the parts, but I would not know where to put those parts in an empty case. It's really more my brother's area, and I try to have him do it when I can, but if a computer fails early in the day then I need to do it since he can't get to us until the evening. If you also don't have a lot of experience and yet somehow find yourself to be the best (or only) candidate for the job, here's what gets me through: (Credit goes to my brother, who's been doing this dusty, sneeze-inducing job since windows were still just for looking outside.) 1. Unplug the cord from the back of the computer. Not only is this standard procedure when working inside a computer, but you have to anyway since the cord plugs into the power supply, and you'll be removing it. In fact, unplug everything and then bring the computer to a well-lit surface where you can work comfortably. Then ground yourself before touching anything inside the computer (touch the screw on a light switch, etc.) since a static shock can damage components. 2. Grab your phone and take pictures of everything before you remove anything. Then you'll be sure you're putting everything back the way it was. This especially goes for any wires you unplug. Most only fit one way, but it still helps to know which way that is since they tend to fit snugly and it can be hard to tell if it's not lined up quite right or you have it completely backwards when you can't clearly see the receptacle due to the tight quarters inside some cases. 3. Dells often don't require a lot of tools these days. There were three screws in the back of the power supply holding it to the case, but otherwise I looked for blue plastic pieces to remove, slide, push, or pull to get things out. 4. Pull wire connectors straight out and push them straight in. Some are locked in with a clip. I used a long, skinny file to reach in and push these clips since my fingers wouldn't fit. A pair of small-nose pliers may help you get a firm grip on the plug. And of course never pull on the wires themselves. 5. Work slowly and deliberately. If something seems stuck, try to figure out why rather than just pulling or pushing harder. 6. If wires go under something, you'll probably need to move that something out of the way. You usually can't just slide the wires out, and it's even less likely that you can slide them back through. There's too much for them to catch on, and they may even be held in place with clips you can't see yet. I had to set the CD drive and the hard drive aside to get to one of the cables from the power supply. Both drives were held in place with blue plastic locking pieces, which I discovered after remembering tip #5. The nice thing is that the replacement power supply was a perfect match for the original. All the cables were the same length and the colors on the individual wires matched up. It makes it as easy as this job can possibly be, so hopefully you'll be back in business with a working computer in short order. ... show more
Reviewed in the United States on July 13, 2020 by RTV
    • Worked great
Worked good
Reviewed in the United States on November 20, 2024 by Armando
    • Muy buen producto
Mi pc ya tiene tiempo con este producto lo volvería a comprar Buena calidad y muy potente
Reviewed in the United States on February 11, 2025 by Richard Emmanuel Alonzo
    • Up And Running In Minutes
These Dells are tough and good. The use on the power source does take toll. Got the product next day and was up and running within minutes. Fresh screws and zip ties are included.
Reviewed in the United States on June 14, 2024 by WG
    • Flawless
Works in Dell 970 without issues. Fraction of the cost of others.
Reviewed in the United States on September 19, 2024 by Pedro Sven Epstein-Yakima
    • junk lasted less than a year
Do not buy, No warranty support or phone. Only a fax
Reviewed in the United States on August 24, 2024 by Bigwave

Can't find a product?

Find it on Amazon first, then paste the link below.