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Item#: N82E16817148047

APEVIA TFX-AP300W 300W ATX12V Power Supply

  • ATX12V
  • 100 - 240 V 50/60 Hz
  • +3.3V@21A, +5V@15A, +12V1@11A, +12V2@8A, -12V@0.3A, +5VSB@2.0A
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The APEVIA TFX-AP300W is a standard Flex-ATX power supply, and is used with the MicroATX slim case or other small form factor cases. It provides robust and reliable output for your entire system, while the silent fan cools the PSU to keep it running at peak performance. 115/230V, universal for global use.

  • newegg 300W Maximum Power The APEVIA TFX-AP300W provides a maximum of 300W power output to all your components. Dual +12V rails deliver reliable energy to the CPU and graphics card.
  • newegg Silent Cooling The quality 80mm fan delivers efficient and quiet cooling that won't disturb you and your co-workers.

Learn more about the APEVIA CORP. TFX-AP300W




Maximum Power
Main Connector
+12V Rails
PCI-Express Connector
SATA Power Connector
Haswell Support
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
Input Current
10A @ 115V, 5A @ 230V
+3.3V@21A, +5V@15A, +12V1@11A, +12V2@8A, -12V@0.3A, +5VSB@2.0A
3.23" x 6.75" x 2.5"
2.1 lbs.


1 x Main connector (20 Pin / 24 Pin)
1 x 12V(4 Pin)
2 x peripheral
3 x SATA
1 x Floppy



Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the APEVIA CORP. TFX-AP300W

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  • Joey W.
  • 11/9/2013 6:25:59 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsNot compatible with HP S5123W

Pros: This seems to be a great power supply for the TFX size box. Fits perfectly, fan is in a great spot, voltages seem to check out great with a Fluke meter, and it looks good too.

Cons: Unfortunately, I bought this as a replacement for a HP S5123W and it will not power up the machine properly. I don't want to blame the power supply though because the PC manufacturer is notorious for not being compatible with even the simplest of devices. I believe I have narrowed it down to this PSU having 2 12V rails with only 11A on the first rail. The motherboard specs state that it should have at least 15A on the first rail if using a 2 rail PSU. I should have done more research before assuming that the total 19A would be more than sufficient since the factory PSU only has 16A on a single 12V rail.

Other Thoughts: If a factory PSU has a single rail it is probably best to make sure the replacement has at least the same amperage on the first rail if purchasing a replacement with more than one rail.

Did you find this review helpful? Yes No

  • Troy A.
  • 7/2/2013 12:02:55 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsDOA

Pros: Price and specs were perfect for replacing Vostro 200 SFF power supply.

Cons: DOA

Other Thoughts: Could not get system to power up with this at all. Finally remembered to bring it to work and connect to a power supply tester just outside of 30 day return window. Tester confirmed the unit was dead.

Manufacturer Response:

You can do an RMA through us for the power supply to get an exchange on the PSU if you are still under our warranty period. You can contact Apevia's customer service at or call at (909) 718-0789. We try to reply to all calls and e-mails as soon as we can.

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  • Luke L.
  • 1/10/2013 12:07:12 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSo far, so good

Pros: Fair price, fair cable length, quiet, and came with a power cord.

Cons: None...yet.

Other Thoughts: Bought this to replace the failed PSU in a Dell Vostro 200 series SFF computer. Seems to work just fine for this use. 4-pin power for motherboard was a bit of a stretch to reach the connector on the motherboard, but not extreme or worrisome.

I like the black painted metal of this PSU vs the original grey...but it's not like anyone seems this ever again anyway.

Only time will tell as far as reliability goes.

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  • Terry L.
  • 1/3/2013 9:21:25 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorks Perfectly in my Dell Vostro 220

Pros: Unit works perfectly as a replacment to the DELL OEM, that failed. Nice and quite also.

Cons: None

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  • kyle h.
  • 12/21/2012 7:01:43 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsNot bad for the price

Pros: Very Quiet. Somewhat easy installation aside for the 24 pin connector being right behind my optical drive. Plenty of cables for what I needed it for. Screw holes lined up perfectly with my case.

Cons: The 4 pin connector was a bit shorter than my last PSU but it still was able to reach.

Other Thoughts: I purchased this with a new video card but apparently I didn't research enough to know this was an insufficient power rating for the new video card.

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Item#: N82E16817148047
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