Recent content by sambodude33

Maybe the right question is which is positive, the central hole in the laptop or where the cylinder makes contact?

I have a plug with two holes and the lap top requires the one with the cylinder and pin in center.

Ok I'm new to this site and can't seem to figure out how to post a picture. I took one and it's on my phone but I can't find the option to upload on here.

So the plug in is o e with two(-&+)holes and my laptop takes the round cylinder with small pin in center. My situation does not allow for replacement for some time. I am knowledgeable with electronics but looking for diy advice. I have many extra adapters and wire to work with. Some need to...