Skip to: |

Newegg.com - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top-rated customer service - once you know, you Newegg.

If you are reading this message, Please click this link to reload this page.(Do not use your browser's "Refresh" button). Please email us if you're running the latest version of your browser and you still see this message.

Newegg.com - Computer Parts, Laptops, Electronics, HDTVs, Digital Cameras and More!

Sign up today for a 30-day free trial of Newegg Premier
  • Wish List
  • Feedback
  • Help
Search all
Search
Home
Home > 
Computer Hardware > 
Power Supplies > 
Power Supplies > 
Cooler Master > 
Item#: N82E16817171090

COOLER MASTER GXII RS550-ACAAB1-US 550W ATX 12V V2.31 80 PLUS BRONZE Certified Active PFC COOLER MASTER RS550-ACAAB1-US Power Supply

  • ATX 12V V2.31
  • 80 PLUS BRONZE Certified
  • 90 - 264 V 47 - 63 Hz
  • +3.3V@20A, +5V@20A, +12V@44A, -12V@0.3A, +5Vsb@2.5A
  • Email this page
ICON Loading...

Built for quality and consistency GXII PSUs utilizes a single powerful 12V rail to deliver clean and efficient power to systems. This high power efficiency is set to deliver ~85% power efficiency and is held to the strict standards of 80PLUS Bronze. These PSUs deliver high amperage to power high-end components. All GXII PSUs are equipped with a HDB 120mm fan that offers a greatly increased fan lifespan and low noise during use. This increases overall fan lifespan and protects critical power supply components. Leaving nothing to chance, this protection is strengthened by a comprehensive set of world-class safety measures.


Learn more about the Cooler Master RS550-ACAAB1-US

Model

Brand
COOLER MASTER
Model
RS550-ACAAB1-US
Series
GXII

Spec

Type
ATX 12V V2.31
Maximum Power
550W
Fans
120mm intelligent fan
PFC
Active
Main Connector
20+4Pin
+12V Rails
Single
PCI-Express Connector
2 x 6+2-Pin
SATA Power Connector
6
Efficiency
85%@ Typical Load
Energy-Efficient
80 PLUS BRONZE Certified
Over Voltage Protection
Yes
Input Voltage
90 - 264 V
Input Frequency Range
47 - 63 Hz
Output
+3.3V@20A, +5V@20A, +12V@44A, -12V@0.3A, +5Vsb@2.5A
MTBF
>100,000 Hours
Approvals
CE, UL, FCC, CCC, TUV, C-tick, KCC, CSA, BSMI, GOST
Dimensions
150 x 140 x 86mm / 5.9 x 5.5 x 3.4 inch

Features

Connectors
MB 20+4 Pin x 1
CPU12V 4+4 Pin x 1
PCI-e 6+2 Pin x 2
SATA x 6
4Pin Peripheral x 3
4Pin Floppy x 1
USB Charger cable x 1
Features
Nonstop USB power - USB charging even when the PC is off

Single +12V rail for superior load balancing and VGA compatibility

High efficiency that meets 80 Plus Bronze

Super silent & long lifespan HDB fan

Dual filter from electromagnetic interference

Huge bulk capacitor for hold-up times of >16ms when 80% loaded

Multiple Protection Design (OVP/UVP/OCP/OPP/SCP/OTP).

Model

Brand
COOLER MASTER
Model
RS550-ACAAB1-US

Dimensions & Weight

Weight
4.35

Quick Info


Customer Reviews of the Cooler Master RS550-ACAAB1-US

Do you own this product? Write a Review

ICON Loading...

Filter Results

Go
  • Trevor C.
  • 11/17/2014 12:26:06 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsBad ps

Pros: It has all the connectors I needed for my rig

Cons: The first one I got was doa, the second one lasted five months then started randomly rebooting my machine ever few minutes to hours. Going to get a replacement, and it won't be a cooler master

Manufacturer Response:

Good Afternoon Trevor,

i apologize your power supply is not working correctly as you can apply for an RMA Request through our CM Fanzone along with your purchase invoice and serial number at the following link:

It can take up to 7-10 business days to secure a proper replacement as soon as your defective unit has been received into our system.

Please let me know for further questions.

Regards,
Felinni M.
CMUSA Support
1-888-624-5099

Did you find this review helpful? Yes No

  • Leah G.
  • 9/20/2014 7:30:29 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGreat!

Pros: It works great, fits perfectly and wire management is easy because it doesn't have a lot of excess wires.

Cons: Probably could use maybe like 2-3 more 4pin fan connectors

Other Thoughts: silent like the rest of my machine :D

Did you find this review helpful? Yes No

  • Todd C.
  • 8/11/2014 10:32:55 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWorks

Pros: Bought this to replace a failed PS in my kids PC. Was looking for one that was efficient and wasn't going to break the bank. I have had no issues with this PS.

Cons: This is a budget PS. If you are looking for a supply that had modular cables or sleeves then this isn't for you. I purchased this item knowing this so it wasn't a problem for me.

Did you find this review helpful? Yes No

  • Yuseong J.
  • 7/15/2014 10:50:41 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsFluctuating voltage on the 12V rail

Pros: Nice price and quality name

Cons: 12V rail fluctuates in voltage very far form 12V

Other Thoughts: The voltage on the 12V rail(s) fluctuate more than allowed in the specification, causing *most* motherboards to shut off with a power failure. Upon further research I found that this is an issue with this specific model and others have reported have the same problems. Returned for a refund after paying $15 in shipping.

Manufacturer Response:

Hi Josh,

We apologize for the trouble/confusion you had with our power supply. By Intel ATX standard, the 12V is fluctuates within 11.4 to 12.6 in voltage. This is a standard followed by the computing industry. If the 12V goes beyond that range, it is definitely faulty and should be replaced indefinitely. If that is the case, which any brand, we recommend that you contact the manufacturer and ask for replacement based on that situation. If you have further questions regarding this standard, please let us know.

Respectfully,


Marvin R.
CMUSA Support.

Live Chat:
http://us.coolermaster.com/livehelp/chat.php

Phone:
1-888-624-5099

Ticket:
http://support.coolermaster.com

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

  • Keith H.
  • 7/6/2014 8:44:33 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggs2nd times a charm

Pros: Delivers the power and is very quiet.

Cons: !st one had a intermittent open in the 4 lead motherboard cable near the power supply. Returned it and 2nd one works great.

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

ICON Loading...

Send It As A Gift!

gift services details
Are you an E-Blast Insider? Subscribe Newegg e-Blast
PayPal
Shop without retyping payment details. Secure shopping made faster.
Check out with PayPal.

Home
Home > 
Computer Hardware > 
Power Supplies > 
Power Supplies > 
Cooler Master > 
Item#: N82E16817171090
Related Products
ModelBrandRosewillModelARC M650SpecTypeATX12V v2.31 & EPS12V v2.92Maximum PowerContinuous 650W@40 ...
ATX 12V v2.3/EPS 12V Modular 80 PLUS BRONZE ...
ATX 12V V2.3 / EPS 12V V2.92 Modular ...
ATX 12V v2.3/EPS 12V 80 PLUS BRONZE Certified ...
Shop by Region: United States | Canada | China
VeriSign Click for the BBB Business Review of this Computers - Supplies & Parts in Whittier CAThis site protected by Trustwave's Trusted Commerce program Inc500
Policy & Agreement | Privacy Policy  © 2000-2014 Newegg Inc.  All rights reserved.
If the Adobe Reader does not appear when you click on a link for a PDF file, you can download Adobe Reader from the Adobe web site.