I crossflashed my NEC 3550a to 4551a.
And in Nero CD-DVD Speed, reading a CD is only at 16x. Burning a DVD takes around 30minutes.
I tried to flash it back, but it says that it's a 4551a and that has to be the real drive number. But then I can't change it like it says.
BTW, I crossflashed to Dee's 1.Z2.