J50 master / slave jumper ??

[wide angle]

Hi guys

I have an old HD (6g) which was kept in storage for long back. I want to add on my compute as slave to save all my mp3 music. i just an advice which is which as
it mentioned here Jumper 50 has to be off if use as slave.

My question is OFF means with or without jumper?

thanks for your informative reply

[doctorgonzo]

Usually, off means without the jumper.