CRJ Female DC 12V 4-Pin Molex Power Adapter Cable - 6-inch (15cm), Black Sleeved - Power ATX 4-Pin Peripheral Molex Devices with a 12V 5.5mm x 2.1mm DC Barrel Plug Power Supply

I bought this to go with a "HDMIHOME 50cm eSATAp Power ESATA Combo to SATA 22pin & IDE 4pin 5V 12V for 3.5 2.5 Hard Disk Data Cable" to power an external 3.5" drive. It worked great.

Bought this to run some PC fans that are used as an exhaust for my server rack. Works as expected, and it doesn't feel like a cheap fire hazard either.

This is exactly what I need to power a case fan I've installed on the outside of my cable modem, but if it's not in the right position, it doesn't work. I get the same results with both 2.1mm and 2.5mm internal diameter barrel plugs. Others have had good luck with them, so II may order another since I haven't found any alternatives.EDIT: I requested a return for replacement and they cross-shipped, so I got it quickly. The replacement works great.

Product as described.. used for under cabinet led lighting power source..

Not a complicated product, worked like it's supposed to.

Poorly made and would not mate, damaged the connector on my $60 pump.

Honestly what more can I say. Its an adapter plug I am using with a M.2 -> PCI adapter board to power a NIC card I'm putting into an Intel Skullcanyon NUC. Works great and with the adapter I had didn't have any issue.