We recently had the opportunity to have a look at CaseBuys
EZ Power Supply Tester 2, it’s a device used to
check the rails of your Power Supply Unit. Here’s
a snippet from CaseBuys webpage:
“With the power supply being one of the most
important parts of a computer, you cannot afford to install
a damaged or defective unit. Corrupted data, blue screens
of death, and even severe system damage can result from
incorrect power being supplied to your computer.
Encased in sturdy aluminium, the EZ Power Supply
Tester allows you to check the power from your 20pin or
24pin motherboard, 8pin, 6pin, 4pin and SATA connections.
LED indicators let you know if power is being supplied
on each voltage rail and a master PG LED informs you of
the overall result.”
• Case Material: Aluminum
• Dimensions: 89 x 63.7 x 17.5 mm
• Characteristic: Light weight and pocket size
• Thickness: 1.0 mm
• Features: PG auto warning LEDs show each output
• For use in standard ATX power supply
The EZ Power Supply Tester comes in a blue cardboard
box with some simple instructions on the back. It came
in a very good condition seeing that it has shipped all
the way from Taiwan to Driverheaven in only a brown, padded
The PSU tester has a blue aluminium casing as you can
see in this picture; it has a brief set of instructions.
You can also see the diodes indicating the rails on the
Here you see where you attach the 20/24
pin ATX connector. This is the main difference from the
first version of the PSU tester; the possibility to test
24 pin ATX connectors.
Here are the connections used to test
the “P4” connector, PCIe and floppy connections.
Here you can test the rail for the SATA
And the connector to test the four pin
In the testing I used an Antec Neopower
480W Power Supply Unit, which I know is in working order.
I would have liked to test this with a known
faulty PSU also, but unfortunately I don’t have
one to test with and I don’t feel like breaking
one in testing purpose either. So the Neopower will have
Here you see that all the lights (that should light up)
did so when the 24pin ATX connector was plugged in. There
was also a buzzer indicating that everything is ok.
In the pictures (below) you can see that
all the appropriate led lights did light up, indicating
that the Antec Neo Power is supplying the right voltage
to all the connectors tested.
4 Pin Molex, both 5v and 12v...
When I was about to test the “floppy”
power cable I discovered that there was a compatiblilty
problem with the test connector on the PSU tester and
the Antec PSU. The connector on the Antec Neo Power
was too wide to fit on the corresponding connector on
the PSU tester.
It simply wasn’t possible to get it on without
risking breaking it. Hopefully this is something CaseBuy
will take into consideration if they ever are releasing
a version 3 of the PSU tester.
It surely can come in handy if you
are in doubts that your Power Supply Unit isn’t
providing adequate voltage on specific rails. But it
does not tell you how far off your rails might
be, for that you will have to use a multimeter. The
PSU tester is simply testing that there is voltage on
the tested rails.
With that said, is this tester something
that everybody would need in their "computer gadget
drawer"? Probably not, but it is still a pretty
cool thing to have and inexpensive. It can be found
for as little as ~$15US. it would also be a good insurance
to use this tester before assembling a brand new system,
especially if you have bought a cheap "no name"
brand Power Supply Unit.
The EZ Power Supply Tester 2 can currently
be found for a mere $14.99 at Frozen
Mike "Asmoday" Pettersen