this is a really newbie question and can probably be fixed real quick. Like the tittle says, my lite-on 851S only burns at max 4x for DVD+R, other users have posted that it does burn at 8x with 4x Rocoh media. I've upgraded to the latest firmware on the lite-on webite, the GS0H.
This is the results from my SmartBurn Media check:
Drive Type = DVD DUAL
Disc Type = DVD+R (Single Layer)
Disc MID = 52 49 43 4F 48 4A 50 4E (RICOHJPN)
Disc TID = 52 30 31 (R01)
Nominal Capacity = 4.38GB
Manufacturer Maybe = Ricoh Company Limited
SMART-BURN Speed Limit = 4.0X (Write)
I only use Ricoh DVD+R because my DVD player is compatable with them. It works perfectly fine writing at 4x but i'm greedy and want it to write at 8x.