I cut off the Molex and grabbed a multimeter, and the wires are as follows: Red: +12V Black: +5V Yellow: GND Please correct me if this isn't the case normally!

Never buy this. Voltage drops from 5V to 3.5V under less than 1A load. Bought two of these, going to throw away both.

DOA. Shoulda paid attention to other comments.

I can see how these would burn out disk drives. The rails have to be load balanced in order to maintain the voltage regulation. If they're not, the voltages go way out of spec. So it'd be real easy to brown out or overdrive whatever it's plugged into.

Cracking one open, it looks pretty decent inside. It's fully isolated and has the usual safety protection circuitry. There are two big heat sinks that run along the sides of the case, so it would be normal for the case to get pretty hot. It's not waterproof so it's only for dry environment use.

Be forewarned. I've used these at work; they came in the box with some USB to IDE/SATA adapters. We ended up throwing away all of them after they fried two disk drives. (15K SAS disks rated at 1.7A 12/5V) These bricks get scorching hot around 1.5A on both rails. Notice there is a distinct lack of certifications like UL and TUV.

How good is the regulation on this brick?

Cannot see what the problem is - apart from being nice to look at - dual 0-15v was about £8 at 4 amps - more than enough 7812 / 7805 parralleled , plus a few capacitors and a ramp up circuit to save on in-rush current - probably what fried the disk drives . Apart from looking a little tatty

My multimeter measured 6.5 amps output on this guy - and there was a mysterious buzz coming from it. Anyone else observed this?

After reading the comments on here, I planned to replace the filter capacitors per Tim's suggestion. That turned out to be a better decision than I had originally thought. Once I opened the supply up (and prior to plugging it in for the first time), I discovered the 12V rail filter capacitor (1000uF, 16V) was already popped. According to Tim, when the power supply is left connected to the mains supply with no load, the 12V rail can rise to 18V and the 5V can go to 8V on a 250V main supply (he's from Australia). These are over the rated voltage for the 12V filter capacitor (probably explaining why it was blown when I got it) and close to the rated voltage of the 5V filter capacitor (1000uF, 10V) respectively. To cover my bases, I'm replacing both with capacitors rated for 25V before I ever plug it in. I'll try to give an update once they arrive and I get them swapped out.

Mine works and I love it, so I bought another. It's hooked up like as shown on this forum post. Oh no, maybe it works because I'm feeding it to Arduino stuff with voltage regulators? I think I'm lucky because I didn't confuse the 4 pin molex with "oh use this instead of the PSU in a computer", rather as "oh goody, I can chop wires of computer crap and use this to power my Arduino project!"

Thanks to all the hate on here, I'll see what I can do to kill the 2nd one I just bought (because I'm so happy with the 1st one).

PS - I just created a CAD drawing of this; it's on GrabCAD

I'd avoid these for applications with sensitive inputs. I totally agree with above comments on output load balancing - I fried TWO Raspberry Pi Model Bs in the span of 30 minutes with this power supply = NOT HAPPY!!! Also, if you hack apart the cord, you'll find the wire color coding is anything but standard!

Is there any chance you will be offering a 4-5A version? Thanks!

Mine "popped" within the first 2 minutes of using it. I was only powering a small experiment board using maybe 100 mA. These would be supremely handy if it didn't destroy itself. I live in Europe, it would cost more to send it back than to find another solution.

I'm needing to replace the supply on my USB backup drive. This would do nicely. My only concern is how is the quality? I don't want to fry my backup disk. Gota be careful with something that's powered 24/7 and unsupervised.

works like a charm. The diagram is outdated though so you'll need to test all the wires to see which is 12, 5v, and ground

Will this supply enough current to comfortably power a project using the thermal printer you guys sell?

wait, If I use 2 of these in parallel will it provide 4 amps?

Very good idea. 2A is more than enough for most projects. I'd rather buy one of these than messing up with the computer's power supply.

Possible typo? 12V*2A = 24 W, not 34

Did your product sourcing amigo do any quality inspection of this device? I have learned to be weary of cheap chargers and other such stuff from China.

I like this. keep getting bigger ones, I wouldn't mind a power supply that can give out 5,9, and 12 volts or 5 amps.

Might be worth noting that while "Molex Connector Pinout" shows both center-pins as ground, only one of them is actually ground in this PSU.