Coolmax CX-350B 350W Power Supply - CX-350B

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5 out of 5
Total Reviews
Overall Satisfaction
Ease of Use

I had purchased this power supply marked as an AP-400X model (it is really a 350W power supply) based on the Coolmax namebrand and the price. It worked fine the first few months in a desktop only used 2-4 hours daily, although there is nothing quiet about this unit as the fan is extremely loud. After a period of time, it started to cut off on its own. When I contacted Coolmax about the problem, their resolution was to cut the power supply off for five minutes, then turn it back on and do this for five times to get the power supply back up and running. Now after two years it still runs, but I have to go through that sequence twenty times in order to get the power supply working. Do yourself a favor and spend the money on a better unit.

-Anonymous quote

Incredibly quiet, great value.

by Steve Norris on 5/23/2005

I just installed this power supply with a new quiet processor fan, and let me tell you I'm impressed. The old ones that came with my computer were ridiculously loud. When I turned on my computer after installation, I kept waiting to hear how loud they would be, and I did a double take because I can barely hear my computer now. On top of this, the Coolmax power supply is a bargain compared to other 12cm fan power supplies which cost over twice as much. I just wish I'd bought quiet fans sooner. Read More

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Excellent all around

by Russell J. on 4/4/2007

I have been searching for a quiet power supply at the right price and this one exceeds all my expectations. I tried the cheaper 80mm CoolMax, but it has too much fan air noise. I also have a supply which is excellent and quiet, but a little pricey. This 120mm CoolMax has a fan speed switch for silent operation, nearly silent, and high-speed super cooling. I also like the flex wrap on the wires that helps keep things neat. And, the price is good. Read More

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Product Overview

Coolmax's initial task of providing cooling solutions for electrical and industrial applications using AC and DC voltage fans is its solid foundation. The company's commitment to excellence in both products and service had earned for its the reputation as a leading thermal solutions provider in the industry


Manufacturer CoolMax
Mfg Part# CX-350B
SKU 10385142
UPC 895963140173
UPC 14 00895963140173
Built-in long life 120mm silent cooling fan
Serial ATA 150 Ready
3 Speed Fan Control Switch
Universal Connector Fits Most of Branded Motherboards
Fully support All Intel & AMD series demand.
High quality gold-coated fan guard & connectors are good for conduction.
Tube-tide design to tidy the wires.
Over voltage protection, short circuit protection on all output levels
With +5VSB: 0~2.5A Max.
AC input 100~132VAC or 200~264VAC
Frequency 47~63Hz
Efficiency >65% at full load
Meet FCC part 15 Class B, CIS PR 22 Class B
Designed refer to UL, CSA, TUV, CE regulations
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 - 350 Watt
Compliant Standards - CSA, UL, TUV, CISPR 22 Class B, FCC Part 15 B
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
1 YEAR Limited Warranty

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