z60m power plug

[Solmyr]

Hi

I have a z60m and it has broken the center pin in the coaxial power plug.

It is market "signal". DC power is using the outside and inside part of the
barrel, so it still works great.

What does this signal do? It is nessecery to have it?
Can i plug this power cord to my laptop without any problems ?

After a small investigation i discovered the signal cable isnt used (there are only 2 cord in power cord) am i right?

ThX in advanse for answer
p.s. sorry for my english:/