Long story short, the tiny wire between the fuse neutral and the OEM power connector on my Longer LK4 3D printer was broken - I somehow managed to ordered to accidentally stumble upon it. What you know is an exact match. 3 minute installation - simply swap and screw in the connectors on the back of the port. Glass fuse 5x10mm 10A included! The lighted switch is a nice touch, especially for a 3D printer that has no other way to turn off the PS.