3550a cd-rw burn speed limited

I just bought a 3550a. I put in a 4x-12x rated MCC CD-RW disc, and Nero says I can only burn at 10x speed.

I want to burn slower than 10x because it is an audio cd I am trying to make.

How come I can’t choose other speeds?

Semms that you cannot unless you use another firmware or media…

my old Benq cd burner can burn the cdrw disc at 4x,8x,12x.

i don’t see why the NEC can’t…