Ultra Power Supply Tester Review

Manufacturer: General

All in One Place


From time to time all of us experience some type of problem with our computers electrical system, be it the power supply itself or a motherboard problem.

Most of us are not blessed with Electrical Degrees or Electricians Licenses and basically all we want to know is 'does our power supply work' and 'does each of the power lines work'.

To this end Ultra a company well known for it modular power supplies has developed a simple comprehensive 7-way testing device.


The specs are quite simple as you would imagine, with an audible beep that lets you know whether or not the power supply has powered up. If you hear the beep the power supply has indeed powered up, if not and you have it connected to a wall outlet and have any switch that might apply powered on, then it sounds like you need a new PSU.

But let's say for augments sake, you hear the beep and you have the 20 or 24 pin ATX connector attached (you need this one attached to hear the beep), you'll also see that the green LED's light up to signify the proper current is available from the ATX connector.

The following connectors can be attached to the Ultra Power Supply Tester:

  • 20/24 Pin ATX the proper current 

  • 4 Pin / 8 Pin CPU

  • 4 Pin Floppy

  • SATA

  • PCI Express

A Closer look at the Unit

Each of the Ultra Power Supply Tester's receptacles is clearly marked as you'll see from the series of photo's that follow below.

I know that Ultra refers to this unit as a 7-in-1 Power Tester, I actually count eight:

  • 20 pin ATX

  • 24 pin ATX

  • 4 pin CPU

  • 8 pin CPU

  • 4 pin Floppy 

  • 4 pin Molex   

  • SATA

  • PCI-E

Makes you also feel like you're getting something for nothing; but that's all and good, because with the Ultra's comprehensive ability to test modern power supplies, you won't need another!

Final Thoughts

As I've just said, with the Ultra Power Supply Tester, most of us really won't need any addition equipment unless a simple yes or no, isn't enough and you require much more in the way of professional information.

What the unit won't do is tell you the voltage of each power line you're testing and for the price, I doubt if anyone would expect it. But, it would be a great feature for the next release!!

The Ultra Power Supply Tester should find its way into the bag of tricks most computer enthusiasts keep handy for trying times.

The photo above shows you the power supply I'm currently testing and you can see all the green LED's lit up, telling me it's a good PSU.

We would like to think the good people at for sending this handy tool our way. As I intend to keep mine (it's already in my bag of tricks), you can get yours for only $18.95 (US). From where else? of course!

April 17, 2012 | 05:08 PM - Posted by RAYMOND DUCINKO (not verified)

this power supply tester was the best purchase i ever made to determine if i am getting power out from the cables attached to the power supply.
you can not go wrong by purchasing this tester. it will save you many hours of trouble shooting. you also have to remember that is gives you the voltages coming out of the 20 or 23 pin connector and remember that most powers supply do not put out -5volts because it is not used on the major computers.
you can not go wrong by purchasing this tester.

August 4, 2012 | 03:26 PM - Posted by Rhem (not verified)

when i test my PSU using my Ultra 7-1 tester i notice that the -5v led light does not lit up like all the rest. What does this mean? Is it time for a new power supply. the PSU beep once i plug it in but one light missing. i did plug in almost all that i could. There is no beep from the computer when the cables are plug in the computer itself. This what led me to believe that i have a power issue. plse clear this up for me.
Thank you,

November 28, 2012 | 03:15 AM - Posted by Richard (not verified)

Some Motherboards need -5v and some do not.
Some power supplies have -5v and some do not.
If a motherboard needs -5v, the power supply must provide it or the motherboard simply will not work.
If the motherboard does not need -5v, either kind of power supply will work.

September 13, 2012 | 04:42 PM - Posted by Trevis Hicks (not verified)

Rhem....I am having this same issue with a power supply I am testing. I would like to know the answer as well. By both of us having this issue, it makes me wonder if that is actually "normal". Keep me posted if you find out. is my email addy just in case it doesn't append it to this post.

November 28, 2012 | 03:18 AM - Posted by Richard (not verified)

See the reply above. A power without -5v can be 100% good. You just cannot use it with a motherboard which requires the -5v rail.

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