 Okay, sometimes I have a lot of faith in humanity and then sometimes I get products that have center negative. So you see here I actually even like use some Sharpie marker to really highlight this. The outer connector is positive and the center is negative which is like opposite the 99.9% of DC connectors. So like if you look at, this is like a 12 volt power supply and I've got my multimeter here. If I check this like I said 99% of products is center positive 12 volts ish but then what's this? This is a magical cable. It does exactly what you think. It's a flippy floppy reversey poppy. So now when you check the polarity it's center negative. Okay, very handled little cable. So I just finished testing it so I'm going to try again to the shop.