• All Departments
  • Digital Download
Quick Links
Windows Device Finder
Ink & Toner Finder
Kingston Memory Finder
Corsair Memory Finder
Prize Picker
Rebate Archive
Send Us a Message
eBay Outlet
We Accept
Shop Safely
HACKER SAFE certified sites prevent over 99.9% of hacker crime.
Click to verify BBB accreditation and to see a BBB report.
NCIX - Our products on Shopbot
Testimonial Box
"I now depend on NCIX for all of my computer needs. The swift, professional way you deal with your customers..."
— Shawn
Read More
Write Review 300 Watt ATX Replacement Computer PC Power Supply 300 Watt ATX Replacement Computer PC Power Supply - 1
Actual product may not be exactly as shown. 300 Watt ATX Replacement Computer PC Power Supply - 41683_l.jpg Customer Photos (0)

Express Shipping
Reg. Price: $40.20  CAD
In Stock

This item is in stock and will ship as soon as possible. Usually ships in 1-2 business days.
Service Plan:
NCIX Express Exchange
If your product is diagnosed as defective, we will replace it with a brand new one! Learn More
None, I do not want NCIX Express Exchange 1 Year Component Express Exchange - Only $3.99 2 Year Component Express Exchange - Only $8.99 3 Year Component Express Exchange - Only $14.99
Avg. Rating:
Share this:
Add to your wish list
E-Mail to a friend
More from
More Power Supplies from
Similar products
Print this item
Notify me

   Shipping Weight:   4 lbs
   Part #: ATXPOWER300

Features    [ Edit | History ]

A reliable upgrade or replacement power supply for desktop PCs.

This power supply offers an upgrade or replacement to a variety of Intel or AMD-based ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX form-factor, this power supply (PSU) can be used as a replacement in a variety of popular OEM desktop systems.

Conforming to ATX revision 2.03, this power supply features a 20-pin ATX power connector and 6-pin AUX power connector, for support for older, legacy computer systems, as well as some newer, low powered systems with it''s ATX12V connector. High quality components and a built in 80mm cooling fan lend to a durable and reliable power supply, while being backed by''s 2 year warranty and free lifetime technical support.

Quick Specs:
Package Contents
  • Computer Power Supply (Internal)
  • 1 x power cord
  • Intel Pentium II, III, 4, AMD K6 and Athlon Processors
Input Voltage 115 V AC 230 V AC
Limited Warranty 2 Year
Weight (Approximate) 3.04 lb
Height 3.4"
Width 5.9"
Depth 5.9"
Number of Fans 1
Green Compliant Yes
Green Compliance Certificate/Authority RoHS

Specifications    [ Edit | History ]
General Information  
     Brand Name:
     Manufacturer Part Number: ATXPOWER300
     Manufacturer Website Address:
     Product Name: Computer Power Supply (Internal)
     Product Type: ATX Power Supply
     Additional Information:
  • Provides a maximum output power of 300 watts
  • High-Flow fan provides efficient cooling for the system and power supply
  • High quality connectors provide minimal resistance and enhanced electric conductivity
  • Premium EMI/RFI power filtration system provides low noise/ripple for super clean and stable power to all system components
  • ATX version 2.03 and ATX12V complaint

     Certifications & Standards:
  • TUV
  • UL
  • CSA
  • CE
  • FCC
  • CB

  • Intel Pentium II, III, 4, AMD K6 and Athlon Processors

     Green Compliant: Yes
     Package Contents:
  • Computer Power Supply (Internal)
  • 1 x power cord

Physical Characteristics  
     Weight (Approximate): 1.38 kg
Power Description  
     Input Voltage: 115 V AC
     Input Voltage Range: 115 V AC
Technical Information  
     Number of Fans: 1
     Limited Warranty: 2 Year ATXPOWER300 Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding ATXPOWER300 reviews.
Experience: 13 Months
VERY rare power supply that has a 6-pin AUX power connector. Still strong after a year of 24/7 usage.
Only 300W. Probably good enough for most, but a stretch if you have high power requirements.
If your MB uses a 6-pin AUX, this is the PS to get. I've had no problems after a year. MB=Gigabyte 8IHXP, P4 3.06GHz, 4x HDs, 2x optical, 1x DLT8000 tape drive, video=Radeon HD4650.
If you need more than 300W, you should consider getting a modern PS and using an adapter cable like this one:

 NCIX Forum Messages

Post a New Message  |    Browse NCIX Forums  

Please note that Forums is not a sales or product support board. For sales or specific product related questions, please send message to receive the fastest response.

Messages about 300 Watt ATX Replacement Computer PC Power Supply

Good p/s (Bill_B- Aug 06, 11, 2 Replies) Read this message

Post a New Message  |    All Messages       Browse NCIX Forums

Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
Reviews from the Web
Submit a review link   |   Latest 30 reviews
Product Warranty
NCIX provides a 30 day limited warranty on this product.  The remainder of the 1 year warranty is provided by the manufacturer.    Warranty length may vary depending on manufacturer and product.
Sales Policy

All pricing subject to change. For all prices, products and offers, reserves the right to make adjustments due to changing market conditions, product discontinuation, manufacturer price changes, errors in advertisements and other extenuating circumstances. Promotional offers from are subject to availability and are available only while supplies last. No rain checks will be issued on promotional items and offers.

While uses all reasonable efforts to include accurate and up-to-date information on the Site, makes no warranties or representations as to the Site's accuracy. assumes no liability or responsibility for any errors or omissions in the content on the Site. warrants product(s) to be in good working condition and free from defects in material and workmanship for a period of one (1) year for OEM packages, and for thirty (30) days for RETAIL packages, from the original Invoice date unless otherwise restricted below or by the manufacturer's own warranty policy. Defective returns and warranty service will be replaced, exchanged or repaired at's sole discretion, and based on vendor's policy.

NON-DEFECTIVE merchandise returns may be accepted on some items ONLY within 15 days of the Invoice date, at's discretion. All NON-DEFECTIVE returns are subject to a 15% restocking fee. No refunds will be issued for blank media, digital cameras (and accessories), opened software, printers, printer supplies, paper, projectors (and accessories), appliances, handhelds, PDAs, notebook computers, special order computers and special order items.

Defective software, video games or DVDs will be replaced by the SAME title and format ONLY (and subject to current availability) within 30 days of the Invoice date. Software, video games and DVDs may be returned within 30 days only if the item is UNOPENED (with shrink wrap still intact) at the sole discretion of does NOT apply a surcharge to credit card orders. Please read our RMA & warranty policy and terms & conditions for more information. If you have any questions regarding our sales and warranty policies, please send us a message -- we'll be glad to answer any of your questions.


Advanced Store Price Match
Get Deal Alerts in your Inbox!
Don't miss out on the latest coupons and rewards.
Please read our
privacy policy for details.
Black Friday Store Hours
Saturday Nov 28th 2015
B.C. Stores: 10AM - 6PM
Lansdowne: 9:30AM - 6PM
ON Stores: 11AM - 6:30PM

Sunday Nov 29th 2015
10AM - 9PM
Markham FMP:
11AM - 6:30PM
All Other Stores:
Your Order Company Info Memberships Services Hotlinks
Order Status
RMAs (Merchandise returns)
Contact Us / Store Locator
Terms & Conditions
Privacy Policy
NCIX Rewards
Premier Partner Reseller Program
VIP Memberships
Advantage Membership
NCIX Affiliate Program
3rd Party Affiliate Program
Super Shipping Saver Club
Express Coverage
Express RMA
Express Shipping Service
Express Exchange and Care Coverage
Gift Cards & Balance Checker
Advanced Store Price Match
Same-Day Delivery (NEW)
Black Friday Sale 2015
Boxing Week Sale 2015
NCIX Newsletters
NCIX Forums
Folding @ Home Team
The Banner Vault
International Sites:  Canada
Copyright© 2015 Computer Inc. All rights reserved. / Server ID: 58 20151128173903  1155 ms
Back To Top