Nero Burning Rom and Acer CDRW4x4x32A write speed problems



I am using Nero or and an Acer CDRW4x4x32 (firmware 3.HS) and I can only choose between 2x and 4x write speed, BUT I cannot select 1x write speed because Nero does not provide my this value!
Do you have any idea or suggestion what I can do to get it?


Sorry ,don’t see why Nero does that.
Have you tried CDRWIN ?