Review on 12V 30A Universal Regulated Switching Power Supply Driver: Ideal for LED Strip Lights, CCTV, Radio, Computer Projects - Padarsey by Eric Fish

Mine got stuck in a warehouse. Apparently they checked it. 5 screws were missing but I found 4 of them rattling in the PSU. Boom when I turn it on. 2 out of 4 connected cameras show strong blur due to high frequency noise at its output. Works well with other power supplies. Tried high frequencies and other filters without much effect. You may need to use multiple smaller power supplies. This one is loud. After it died I opened it up and found all sorts of bad solder joints on the board. Very badly soldered.