其實我猜想應該可以不用動到PlexTools Professional
Nero->燒錄機 ->選擇燒錄機->點PLEXTOR CD-R PREMIUM->
選項->PoweRec開啟<-這個打勾取消應該就不限速了
..........
如果是用PlexTools Professional燒錄的話
1.Driver Setting->Advanced->Disable PoweRec<-打勾
2.Driver Setting->Silent Mode->Max. Write Speed
把20-40X P-CAV改成22-52X CAV

這樣應該就可以了