12 Volt Power Adapter 5 Amp Universal AC Adapter, 100-240 50/60Hz AC to 12V DC Power Supply 5A Cord Transformer, 5.5mm x 2.5mm Plug & 1 More Tip

The power supply for my NordicTrack RW900 rowing machine died, so I needed a new 12V 4A power supply to replace it. A little more amps won't hurt. Too little amps would be worse. The rower didn't come with a power supply so I was using an old Netgear one I had, but it died. This one is nice because it has a blue led so I can tell when it's working. Plus it has over current and under current protection and thermal protection. Hopefully, this one will last a while. But so far so good.

I'm using this to run outdoor lighting (its mounted inside a shed). It gets the job done and is cheap, and comes with an adapter to easily wire to it. The only downside is the lack of UL listing, not that I expect it at this price. I use a couple of supplies to zone the lights with smart plugs.

I was troubleshooting a wifi router, which is apparently bad, and not its existing AC adapter. This adapter did work fine with other devices.What's the moral of the story? Test the power supply before buying a new one. Or, get one that's just $10.It's really nice that they included a jack with terminals for bare wire applications. That gives you some useful options for projects and troubleshooting (see pic). More adapters should include this.