Support double layer DVD+/- R9 recording function Smart-burn avoiding buffer under run error, automatically adjusting writing strategy & walking OPC to provide the best burning quality Smart-X function adjusts CD-DA/VCD/DVD data extraction to a fastest allowable speed according to both data request rate from host & disk quality ABS system reduce vibration & noise during recording & reading Support fixed packet, variable packet, TAO, SAO, DAO, random access write, incremental, sequential recording, restricted overwrite, layer jump recording, raw mode burning & over-burn Support both 8cm & 12cm disc of CD & DVD family Supported transfer mode: PIO mode 4, DMA mode 2 & Ultra DMA mode 5