Summary: I bought the Coolmax I-400 power supply to replace my 250W power supply in my HP computer after the green light started clicking and flashing. This power supply works well and provides enough power, but it runs quite loud and it gets irritating. Also, the wires are very thin and looks cheaply built.
Summary: This psu came with a Printrbot Plus that i bought about a month ago and has been running it alright. When i set the bed to 100C it would not reach it. It would get to 86C and would not go any higher which was quite a let down since it has to be at 100C to print ABS.
Pros: Supplies power. Runs cold. Very light. Hasn't died yet
Cons: Fan runs at full speed constantly. I don't think it supplies 400W but that's just a assumption. I don't trust this power supply to last long. It's too light weight feels too cheap to last.
Summary: I replaced the power supply for an older HP pavilion pc. I had some problems with pc and had stored it. When I tried to use it again it wouldn't boot, power supply bad. It now works better than when new. Best $15 I ever spent.