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Item#: N82E16817182074

Rosewill Stallion Series RD400-2-SB - 400-Watt ATX 12V v2.2 Power Supply

  • ATX 12V v2.2
  • 115 ~ 230 VAC
  • 120 mm Fan

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

In today's power hungry world you need a PSU that can deliver and the Rosewill RD400-2-SB does. With 400W of total output power there's plenty of juice for the most demanding situations. Dual 12V rails with 27 amps of power provide plenty of independent, reliable power.

As in all cases, being well connected is of major importance, and sprouting from the housing are a multitude of mesh wrapped cables to connect all your components. The mesh wrapping keeps things neat and helps to promote better airflow and cooling. Universal motherboard connectivity is ensured with the 20+4 main connector and 4/8 pin EPS connector.

All these are enclosed in a flat black housing with multitudinous ventilation holes and a 120mm cooling fan. The smart temperature sensor intelligently adjusts the fan speed according to the system temperature for minimized operation noise.

  • newegg ATX12V v2.2 Compatible Compatible with the ATX12V v2.2 standard, the Rosewill RD400-2-SB power supply provides maximum power stability to drive the processors as well as other system components.
  • newegg 400W Maximum Power A maximum power of 400W delivers safe, reliable output for average gaming computer systems. Two industry-leading independent +12v rails are provided for more stable and safer power output.
  • newegg Quiet Operation A large 120mm fan with Smart Temperature Sensor delivers whisper-quiet cooling through fan speed adjustments in response to load conditions.
  • newegg Excellent Mesh Cable Sleeving The Rosewill RD400-2-SB power supply’s cables are wrapped in mesh sleeving so your chassis stays neat for optimized air flow and enhanced cooling.

Learn more about the Rosewill RD400-2-SB

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Rosewill RD400-2-SB

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  • Anonymous
  • 1/18/2016 6:27:55 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsIt is a good power Supply

Pros: It has a lot connections.

Cons: It work great with AMD FX 8320 and Gigabyte 970

Did you find this review helpful? Yes No

  • Seth F.
  • 1/4/2016 6:49:06 AM

1 out of 5 eggsDo not buy this ever! Deserves a 0

Pros: I guess it worked for a time. Should have never picked Rosewill

Cons: After two-three years of less than peak use this power supply not only FAILED but it damaged my Biostar motherboard along with it. When I attempted to boot the motherboard off of a different power supply it would not post and the fans would just rev up and down endlessly. Do not buy this product unless you want to risk it destroying your PC.

Other Thoughts: No I would never recommend this product to other people. In fact Rosewill should take back the powersupply and keep it and replace my motherboard.

1 out of 3 people found this review helpful. Did you? Yes No

  • Zachary C.
  • 11/28/2015 9:28:12 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsgreat little power supply

Pros: not the worst clump of wires i had to work with
they are sleeved albeit in a weak sheath
very quiet compared to everything else in this rig, but thats not saying much.
seems to put in some clean power, no whining or anything like that
good price

Cons: its wires are ugly

1 out of 1 people found this review helpful. Did you? Yes No

  • ELizabeth N.
  • 7/10/2015 9:22:16 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsCheap Junk

Pros: Worked well for just over 5 weeks.
Cables are nice and long.
Newegg.com shipping speed is great.

Cons: Lasted just over 5 weeks before burning out.
Cheap Chinese internals cause failure just after RMA period expires.
Next to zero customer service from Rosewill.

Other Thoughts: Failed so quickly (installed 6/3/15, failed 7/8/15), complete rubbish and no customer service from Rosewill other than a "sorry we can't do anything" email response. Tested in another machine and it 100% doesn't work. New PSU works fine in the machine it failed in. Very dissatisfied with this item.

Manufacturer Response:

Dear Valued Customer,
Thank you very much for purchasing this unit.
We strive to provide the most reliable and highest quality products to our customers.

Sounds like your product may be defective; please contact our support team to assist you with warranty options.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com

We look forward to hearing from you.

Thanks,
Rosewill Customer Care

1 out of 1 people found this review helpful. Did you? Yes No

  • Carlos R.
  • 7/7/2015 5:13:18 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsIt works!

Pros: The device works the way it should.

Cons: None

Did you find this review helpful? Yes No

  • Mark J.
  • 5/14/2015 12:30:56 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood so far

Pros: Looks nice.
Seems to be well built.
Good cable length.
Nice wrapping on the cables.
Plenty of connectors (at least for my use)
Quiet

Cons: None so far

Other Thoughts: Understand what the power rating means. Just because it says 400 watts doesn't mean that you should be running it even close to that capacity. If you are going to be running a system that is power hungry this PS probably isn't what you need.

Get something with a higher rating.

Otherwise this is a nice unit for what it is.

1 out of 2 people found this review helpful. Did you? Yes No

  • PETER B.
  • 4/1/2015 3:48:06 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsRosewill 400 Watt PSU

Pros: Great Value Supply, Nice sleeving on the wiring

Cons: None, it has been on the job since purchased 24/7 11 months later still doing it's job

Did you find this review helpful? Yes No

  • Craig K.
  • 3/19/2015 5:01:16 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood psu

Pros: Powers my backup computer just fine
Quiet

Cons: none

Other Thoughts: have had it for about 8 months running a minecraft server on and off.

Did you find this review helpful? Yes No

  • Joel H.
  • 3/10/2015 7:28:36 PM
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsGo with a better brand

Pros: Quiet

Cons: Shuts off abruptly, not reliable

Other Thoughts: I selected this Rosewill Stallion as a replacement for another Rosewill power supply that developed a loud fan. Fast forward two years later, and this has begun to shut down all of a sudden. I run it in a server that must stay up 24/7, and in that, this one has failed. It is getting adequate cooling, and it is not being drained, yet it will stay up for only up for only about 3-5 days at a time without shutting down. It is powering a basic motherboard with no additional video card or other high drain additions. This has been my last purchase of a Rosewill power supply. Going forward, I will stick with name brands.

Manufacturer Response:

Dear Valued Customer,
Thank you very much for purchasing this unit.
We strive to provide the most reliable and highest quality products to our customers.

Thanks for the feedback; we will pass it along to our QA and Design teams for further investigations. In the event that you are having troubles, please do not hesitate to contact our support team at the number below.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com

We look forward to hearing from you.

Thanks,
Rosewill Customer Care

Did you find this review helpful? Yes No

  • Terrin C.
  • 2/10/2015 5:15:30 PM
  • Ownership: 1 week to 1 month

1 out of 5 eggsDOA gift

Pros: Nice price and good size.

Cons: DOA.

Other Thoughts: After testing the power supply on two working motherboards with no results, I accepted that it was DOA. I'll be purchasing my next power supply from another brand.

Manufacturer Response:

Dear Valued Customer,
Thank you very much for purchasing this unit.
We strive to provide the most reliable and highest quality products to our customers.

Sounds like your product may be defective; please contact our support team to assist you with warranty options.

Phone: 1- 800-575-9885
Email: rma@rosewill.com
Email2: techsupport@rosewill.com

We look forward to hearing from you.

Thanks,
Rosewill Customer Care

1 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16817182074
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