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Item#: 9SIA0ZX2CZ8200

COOLMAX CU-500B 500W ATX 12V V2.2/EPS 12V V2.91 Modular Power Supply

  • ATX 12V V2.2/EPS 12V V2.91
  • Modular
  • 115 / 230 V 50/60 Hz
  • +3.3V@21A, +5V@22A, +12V1@17A, +12V2@17A, +12V3@12A, -12V@0.5A, +5VSB@2.5A

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The CoolMax CU-500B semi-modular power supply lets you select the cables you need for a clean and easy installation, while powering your system at a healthy voltage. The nylon sleeving of all the output cables makes cable management easier. Three +12V rails ensure maximum system stability. This power supply provides over-voltage protection and short-circuit protection.

  • newegg ATX12V V2.2 COMPLIANT Compliant with the ATX12V v2.2 standard, the CoolMax CU-500B power supply provides the maximum power stability to drive the processors and other system components.
  • newegg 500W MAXIMUM POWER The CoolMax CU-500B power supply provides a maximum output of 500W to deliver safe, reliable power for your computer system. Three industry-leading independent +12v rails are provided for great stability and safety.
  • newegg EFFICIENT COOLING The CoolMax CU-500B is armed with a 135mm silent fan to simultaneously increase overall airflow in the power supply enclosure and remove heat from the chassis.
  • newegg SEMI-MODULAR CABLE DESIGN The semi-modular cable design allows the use of only the cables you need, resulting in improved internal airflow and reduced system clutter.

Learn more about the CoolMax CU-500B

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years
  • Read full details

Customer Reviews of the CoolMax CU-500B

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  • Comete H.
  • 6/22/2014 9:10:29 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsIf you're not expecting much...

Pros: It's semi-modular. It's pretty quiet under a low load (25W TDP CPU, no discrete graphics.) It's cheap after MIR. It works, so far.

Cons: The cables are long enough for most mid-tower builds, but what I think most of the reviews are complaining about is that the space between the CONNECTORS is very short. This is OK if you're working with drive bays that are close together, and/or in a very compact case. But if you need more than a few inches between SATA power connectors, you may be out of luck.

Other Thoughts: From prior reviews, I knew what to expect. But even so, I had just barely enough length between SATA connectors to reach between my drives.

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  • Kimberly C.
  • 1/12/2014 7:11:40 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsChuggin along

Pros: Inexpensive and quick shipping

Cons: None so far!

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  • John D.
  • 12/29/2013 3:03:15 AM
  • Ownership: 1 month to 1 year

1 out of 5 eggsCheap Plastic Junk with short cords

Pros: Provides Power. Modular power (plug in what you need) which was a feature that sounded cooler on paper.

Cons: Comes with 4 SATA connectors on two cords. That is it. They are short too. if you have an average size case and the PS is mounted anywhere but at the top. The cords wont make it. The Motherboard big power connector was not long enough so I had to use this big ugly extension cord that was white. Everything else is black. Not the extension and it really stands out. Have to go more than 6 inches from PS to your MB? You are going to need this big bulky connector. Remember the SATA connector? Yea. I broke it the connectors are made of really cheap plastic and they broke off right at the connector end. Contacted support on Friday. takes about 36 hours to get an answer from them. I am on the third go around. This power supply is going in the trash and I ordered a new one I am going to stay away from Coolmax going forward. I think it is too cheaply made to put in a new machine I actually care about.

Other Thoughts: Ive never used such a cheap sata connector. the plastic is EXTREMELY thin and of course broke.I was surprised when the first connector just fell off. I tried to use the second one and that one snapped too. With only 4 total sata connectors in the bunch on two cables, it has rendered this supply worthless. Now the UPC code is gone for the rebate and the box is tossed. Hopefully Ill get my rebate and this wont be a complete loss.

The cords are way too short as well. I had to use the big mb connector. That feature sounded cool but in practice I started thinking of having more than one connection for every cord and the value of the plug in cords really became nil at that point. In the future I will just take the power cords soldered into the power supply for reliability.

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  • Michael S.
  • 5/6/2010 8:34:18 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsawesome!!!

Pros: -inexpensive
-partially modular
-nice color
-sleeved cables
-most everything else about it!

Cons: -cables very stiff
-smelly cuz of being new!
-too many cables built in.
-theres no good picture of the thing on the outside of the box!!!

Other Thoughts: this is a nice psu for the price. the heatsnks are smallish when i look into the vent, which isnt neccessarily a good thing, but it seems fine right now. its nice and quiet!
i managed to run my system off all the hardwired cables with 1 sata amd 1 molex to spare.
-ecs lga775 mobo
-2x1gb wintec ampo ram ddr2 800
-intel c2d e6600
-wd 250gb sata hdd
-ata/ide dvdrom
-ultra micro fly micro atx case

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  • Anonymous
  • 5/6/2010 7:27:37 PM
  • Ownership: 1 day to 1 week

1 out of 5 eggsPoor Build quantiy and no mounting screws

Pros: Cheap, modular

Cons: no mounting screws. tried standard screws from three other power supplies and none of them worked. the box didn't come with any screws. and the power supply smells like burning when being used.

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

  • Anonymous
  • 4/5/2010 9:12:05 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsREALLY GOOD

Pros: THIS IS a VERY GOOD I WOULD RECOMEND this power supply.

Cons: NOne

Other Thoughts: none

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  • Anonymous
  • 2/2/2010 2:58:45 PM
  • Ownership: 1 month to 1 year

4 out of 5 eggsNo Complaints

Pros: Semi-modular, and running stable for nearly a year. Powering two HDDs, a Phenom II quad, 8 gigs of ram and a 9600GSO. Never gets loud, never gets hot, never causes me any grief.

Unless you are running on the ragged edge of stability, the voltages are fine,

Cons: The cables are short. I hear that this unit is hit or miss. Some people get good ones that last forever. Some get units that last two months. For the price, its worth the gamble.

Other Thoughts: I've had Antec PSUs be DOA, I've had cheap dell PSU's last ten years. Try it for yourself, don't listen to the people that complain on the Internet. Remember, you don't hear about it when things go right, only when things go wrong.

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

  • Andrew R.
  • 1/18/2010 11:52:35 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat PSU!

Pros: Great setup, i use this in minitowers and it makes all the difference in space and air-flow. Bought 6 so far and plan to buy more

Cons: none

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

  • Michael A.
  • 1/13/2010 9:34:33 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsReasonable.

Pros: Does what its supposed to do. Reasonable cost.

Cons: Not completely modular. Box calls it "partially modular". In addition to the main board harness, there is one standard 4 pin harness and one SATA harness permanently attached. A second SATA, 4 pin, and PCIE harness are modular.

No fan rpm sense wire.

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

  • Anthony T.
  • 12/25/2009 4:11:19 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSSF powersupply

Pros: This powersupply seems to work well, stable voltages and no power-related crashes in a moderate system. It's modular cable design allows for removing anything you dont need in the case, improving airflow over my old powersupply.

Cons: The powersupply seems to get a bit warmer and the fans dont feel as they push as much air as they could. Not so hot you're worried about it, but warmed than I'd like.

Other Thoughts: If you have a lower to midrange computer this should work well for you, if you are going to upgrade to something higher-end look at the 700+ watt range.

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Item#: 9SIA0ZX2CZ8200
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