Memorex 4x DVD+R with Nec ND-1100A

[cos]

This darn dvd+r is only recognized as 2.4x in ND-1100A.
Other people says it works at 4x as well with ND-1100A.
I updated latest official firmware and still not recognizable as 4x..
WTH with this media..

This memorex media Link

 

[AnitaPeterson]

do not mix them... guaranteed coasters. We have this burner at work, and it ruined five Memorex DVD+Rs so far.