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SeaSonic USA > 
Item#: N82E16817151130

SeaSonic SS-400L2U 400W Single 2U Server Power Supply - 80PLUS Gold - OEM

  • 400W Single
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Learn more about the SeaSonic USA SS-400L2U

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the SeaSonic USA SS-400L2U

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  • MARK R.
  • 12/17/2014 1:28:57 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week

1 out of 5 eggsBoth arrived DOA

Pros: There are no pros to a PSU that arrives DOA

Cons: Bought one, came DOA. Bought another to replace to (to avoid delay of cross-shipments), it also arrived DOA.

Both that I bought were DOA.

Other Thoughts: I'm very surprised that Seasonic would produce such garbage. I always had complete confidence in them! Maybe it's just an unlucky batch? issued an RMA for both of them, though, with a full refund, which is most excellent of them to do, and I'm very happy about that. I hope they learn quickly that this is a defective product batch. Maybe it won't be later, if you're reading this later... ?

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  • John H.
  • 11/23/2014 7:41:16 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsPoor QA and Unreliable

Pros: None - It's a PSU - under reasonable conditions it should power a computer.

Cons: High failure rate - 33% to be exact.

Other Thoughts: I've purchased three of these over the last year - all for the same 3U rackmount config. The first one is still running after one year. #2 was DOA right out of the box from NE, #3 died yesterday after about 45 days of use. Based on this experience I won't purchase another.

Manufacturer Response:

Hi John, I am sorry for the inconvenience. Have you visited for RMA support? If you have any quesitons, please contact me at and we will do our best to rectify your situaton. Thank you.

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  • Joshua K.
  • 8/2/2014 12:07:55 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsSeaSonic SS-400L2U

Pros: Allows electrons to flow.

Cons: See "Other thoughts".

Other Thoughts: *The cooling fan is not the best by any means... I'd removed the bearing sticker and gave it a dusting of dry graphite... Things are much nicer now. If you can, replace the stock 60mm fan with a high end fan and you'll be happier.
*Cable harness to PSU connections are VERY tight. There were times I thought there was going to be damage plugging and unplugging connectors.
*Modular cable harness is nice and allowed for easier customization to suit my needs.

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

  • Dae K.
  • 7/20/2014 8:04:43 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsTrue to Seasonic capabilities

Pros: Looks OEM
Lots of screws
Clear descriptions and manual
Practically a fanless PSU at low loads

Cons: PSU screw holes are not really standardized like the ATX power supplies with respective cases. Some holes exist, some holes don't; I guess one screw is all you need to secure the thing into place, but it feels uneasy not using all the screws the PSU includes in its materials.

Other Thoughts: The PSU fits nicely in Norco RPC-450. The frontal support bracket did not fit with this case, but PSU stays in place with only 2 screws in place. The modular plugs were confusing at first, but as long as the user plugs in all the modular cables on the PSU first (before plugging the 20-pin connector into the motherboard) everything should be OK.

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

  • Eric N.
  • 3/24/2014 4:55:20 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat PSU

Pros: -Very efficient
-Fit perfectly in my Norco 2212 case
-Plenty of connectors (see other thoughts)
-It's Seasonic, so I know it'll last forever

Cons: Not really any

Other Thoughts: I looked and looked and looked for the connector count before purchasing this, and I could not find it anywhere. In case anybody else is interested, here it is:
1 24pin ATX connector
1 8pin EPS12V connector
1 4+4pin ATX12V/EPS12V connector
5 4pin molex HDD/ODD connectors
4 SATA connectors
1 4pin floppy connector
1 6pin PCI-E connector

6 out of 6 people found this review helpful. Did you? Yes No

  • James S.
  • 9/22/2013 8:45:39 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGood for 2U rack mount systems

Pros: Quiet
works great with the Norco RPC-2008

Cons: Would be nice if there was a platinum model

Other Thoughts: This works very well for any 2U rack unit. The wattage is perfect for 8 drives in my case and probably could power more. The only downside was that I wanted a platinum data center but have not been able to find any 2U power supplies for a reasonable price.

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

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Computer Hardware > 
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Server Power Supplies > 
SeaSonic USA > 
Item#: N82E16817151130
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