Coolerguys 100-240v AC to 12 & 5v DC 4pin Molex 2A Power Adapter (2A, Without On/Off Switch)

This Coolerguys AC to DC power adapter works as expected, providing stable 12V and 5V output through the 4-pin Molex connector. Build quality is solid and setup is straightforward. A good solution for powering components that require Molex connections.

This product is a lifesaver honestly. I wanted to keep my reciever cool, and I have tons of used computer 120mm fans laying around, but with no way to give them power since they use molex connectors. Enter this product and bam, problem solved. You just plug it into your wall outlet and you're able to run any molex powered device off of it. Depending on your fans voltage rating, you can get quite a few fans running off this thing. I was personally was able to chain 4 with no issues, and now my reciever is nice and cool when it's running. This product is definately a nice quality, but I will admit the price seems a little steep to me. I feel like it could be a little cheaper. But I looked around the internet and this price was pretty consistent with competitor pricing that I could find, so I decided to order based on Coolerguys reputation being my deciding factor( I've dealt with them pretty often because I build computers and never had a problem with them). If I could have found a different molex power adapter for a significantly cheaper price, I probably would have went with that though. This product would also be good if you wanted to run some molex powered LED cathodes or lights to light up your computer desk a little. I'm thinking about ordering another one for that use.

I wanted an external power supply with Molex connector to run an out of case diskette drive (if anybody remembers what those are). Out of the box, it appears to be excellent quality, good construction. Voltages test as specified. Powered up the drive. Important Note: There are four pins on Molex connectors for this type of power supply. The outside connectors are for the two different voltages, 5 and 12. The two inside connectors are ground. In SOME supplies only one of the inside connectors actually exists; the other is a non-functional dummy. That can be a problem. With this adapter BOTH inside connectors are grounds. The description does not specifically address that, but I verified.

I have a Kryoflux that I use for backing up floppy disks. After not using it for a couple years, I got it out and tried using it, and it didn't work. After replacing the floppy drive cable and doing a bunch of diagnostics, it turns out the original power supply couldn't source enough current to power the disk drive motors anymore. So, I bought this one as a replacement, plugged it in as soon as it arrived and everything works fine now. Threw the original one out. Cheap power supplies are just a headache, make sure to get a good one like this.

Pros: + Convenience , reuse spare Computer Fans for out-of-pc applications + Great Fan Tester to check noise levels at 12v and 5v (for 5v, use a 5v molex adapter or Red/Black lines). Also handy to check if the bearings are going bad or need to be lubricated Cons: - This power adapter doesn't maintain good voltage control over load. Under 12v @ 1A power load, this was reading about 10.9v for me on the +12v rail. That is well out of the +/- 5% comfort zone that I am comfortable with. I would recommend to NOT use this to power up Hard Drives or anything that has a higher power draw.... especially if you have important stuff on it! Conclusion: Only good for fans and testing. Do not expect to get full 12v out of it under load. For silent applications, this is mostly fine as most fans will be undervolted for lower speeds.... Just use a manual fan controller for full control

Molex connector does not fit into standard connectors. I had to stretch out the female sockets and really jam it together to make it work. And yes, I know Molex connectors have chamfered corners, so they only go in one way. The problem was that the four individual receptors were too small.

Excellent replacement for original part. Working great and barely gets warm in use. I guess that's why they're the Coolerguys!

Good switch mode supplying +5 and +12VDC at 2 amps. The 4 pin molex connector is compatible with older computer peripherals such as hard drives, dvd drives and cd drives. I used it for a custom LED meter display in a hand crank generator demo of my design for a major museum. So far so good. The +5VDC runs close to the spec of 2 amps at peak "crank" but since it's duty cycle is low, there appears to be no issue.

Excellent. We were using computer fans to cool stepper motors on 3D cnc machines and this was the power supply which operated great as we had molex to molex conections

it's a power supply for a 4 pin device.... it works well with the Coolerguys Programmable Thermal Fan Controller with LED Display, to let me conceal everything in my entertainment unit.

It's perfect for powering up my own custom made rackmount cooling (CASE FANS) setup

As described and delivered on time.

I used it for testing my water cooling loop. I did put a switch adapter on it so I could turn it on/off. Worked perfectly. I also used it to test some fans I bought to find the quietest ones.