Polarity on Nextbook 10.1

[mrsblindman]

I had to buy a replacement power cord for my nextbook 10.1 and the instruction paper is asking for the polarity. I've searched forever to no avail. Any and all info appreciated. Thank you. p/s I'm in dire straights for this tablet/notebook to be fixed. The name of the replacement power cord is PowerLine.

 

[1shado1]

Do you still have the old adapter?