CoolMax CX-400B 400W 120mm Silent Fan Black ATX PSU

3.5 stars
2 reviews ratings
By: CoolMax
FREE shipping available on $50 + orders
If your order totals $50 or more and you select Value shipping, this item and any other qualifying items ship for free!
FREE pickup
Sold by
Showing options for 98109
Data unavailable
Data unavailable
Data unavailable
Data unavailable
Showing options for 98109
1 more seller from $32.15
| Learn more

About this item

The CoolMax CX-400B 400W ATX v2.01 Power Supply features a built-in, long-life 120mm silent cooling fan, serial ATA 150, ready three-speed fan control switch and universal connector. This CoolMax power supply fits most branded motherboards. It fully supports all Intel & AMD series demand. Its high quality gold-coated fan guard and connectors are good for conduction. The 12V power supply has a tube-tide design to tidy the wires. It offers over-voltage protection and short circuit protection on all output levels.

CoolMax CX-400B 400W ATX v2.01 Power Supply

  • +5VSB: 0~2.5A Max
  • AC input 100~132VAC or 200~264VAC
  • Frequency 47~63Hz
  • Efficiency >65% at full load
  • Meet Intel ATX12V/ ATX 2.03
  • Dimension: 150x140x86 mm
  • Tech Specs Device Type - Power supply Form Factor
  • Internal Specification Compliance - ATX12V 2.03
  • Input Voltage Range - AC 100 - 120 / 200 - 240 V Frequency Required - 47 - 63 Hz
  • Output Voltage - +3.3, 5, 12 V Power Provided - 400 Watt
  • Compliant Standards - CSA, UL, TUV, CISPR 22 Class B, FCC Part 15 B
  • Connectors: 1x 20-Pin Main Power 1x 6-Pin AUX (Xeon) Power 1x 4-Pin 12V (P4) 4x 4-Pin Peripheral 1x SATA Power 1x Floppy
  • Specifications

    Length: 9.3"
    Model No.: 14019
    Shipping Weight (in pounds): 3.35
    Product in Inches (L x W x H): 9.3 x 8.6 x 3.9
    Assembled in Country of Origin: Imported
    Origin of Components: Imported

    Customer reviews

    Customer Reviews | 2 reviews | 3.5 out of 5

    3.5 stars

    2 reviews | 3.5 out of 5

    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Would recommend to a friend



    Works Great

    Customer review by VMD2B

    5.0 stars by VMD2B

    I have been using this power supply for two years now and it has been working great. I cannot even hear it running unless the room is completely silent and I am listening for it. I have a Nvidia GeForce GT 520 graphics card and this PSU is more than enough to power it even when I am playing games. It was also fairly easy to install and fully works with my HP computer with Pentium Dual-Core CPU.

    Was this review helpful? (0) (0)
    Thank you! You have successfully submitted feedback for this review.
    Would recommend to a friend? Yes
    Ownership:Longer than one year
    Age:18 - 24
    Usage:Every day
    Walmart associate

    Customer review by Fishnndude

    2.0 stars by Fishnndude

    The description of this item states it will connect to AMD motherboards and accessories and while it did connect to my motherboard it would not connect to my disc drive which made this unit useless for me. Also the unit states it is a 400W unit when it is actually 375W. And lastly it said it comes with a gold plated fan guard for excellent heat dispersal but it was just a regular chrome or nickel plated (not a big deal but if they make a point of mentioning it in the item description then thats what I should get).

    Was this review helpful? (0) (0)
    Thank you! You have successfully submitted feedback for this review.
    Would recommend to a friend? No

    Customer Q&A

    Have questions? Get answers from experts and customers who own this product.

    Ask a question

    If you would like to share feedback with us about pricing, delivery or other customer service issues, please contact customer service directly.

    Q&A tips and guidelines

    Q&A Exchange Guidelines

    When writing your question or answer, please follow these guidelines:

    • Do: Make sure your question is directly related to the product
    • Do: Be specific and provide as many details as possible
    • Do: Include the model number (if applicable)
    • Do: Write your question in English
    • Do Not: Include personal information (such as your full name)
    • All submitted questions and answers are subject to the terms set forth in our Terms and Conditions

    We reserve the right not to post your question or answer if it contains any of the following:

    • Any information not related to the actual merchandise or topic
    • Obscenities, discriminatory language or other language not suitable for a public forum
    • Advertisements or “spam” content
    • Email addresses, physical addresses or other forms of contact information
    • Critical or spiteful comments on other questions or answers posted on the page or their authors
    • Any imagery that demonstrates incorrect use of the merchandise
    • Anything that Walmart deems to be inappropriate, at Walmart's discretion

    Provide as many details as possible, including the model number (if applicable).

    Remember: Don’t include personal information (such as your full name).

    Preview Question

    Walmart does not sponsor, recommend or endorse any third party product or service, or any customer ideas or advice.

    Thank you.

    Questions will be checked against our question guidelines and posted within five to seven business days.

    Policies & Plans

    Warranty Plan

    Walmart Product Care Plans
    A limited product warranty is included free for most items. With an optional Walmart Care Plan you can enhance the manufacturer's coverage from the date of purchase . Walmart Product Care Plans cover 100% of the cost for repair or replacement, including shipping charges for the exchange.

    We'll show you Care Plan options and pricing at checkout if applicable, or go to for more information.

    Product warranty: 1 Year Limited See details

    Supplier Warranty: 1 Year Limited
    Safety Requirements: N
    Did you buy this in a Walmart store?  Get a warranty for it here.

    Product Recommendations

    Your recently viewed items

    Clear this list