Sony DW-Q520A on Toshiba problem

I’m trying to get a Sony DW-Q520A Slim DVDRW drive working in my Toshiba Sat Pro 6100 Laptop.

I am led to believe that I need to set the Q520A to Inverted CSEL to make it work.

Could anybody tell me how to do this?

I’ve got firmware HYS2 on the Q520A.

Juoo. :confused: