Here is the IDE report from my combo Plextor.

Secondary Master: PLEXTOR CD-R PX-320A
Model: PLEXTOR CD-R PX-320A
Firmware: 1.01
Device Type: ATAPI - Removable - CDROM
PIO Mode Support: 0 - 1 - 2 - 3 - 4
DMA SW Mode Support: 0 - 1 - 2
DMA MW Mode Support: 0 - 1 - 2
UDMA Mode Support: 0 - 1 - 2
Default Transfer Mode: UDMA-2
Current Transfer Mode: UDMA-2
Transfer Mode Limit: No Limit
Cable Type (Device): 40 Conductor
Cable Type (Host): 40 Conductor
PIO PPE: Enabled
UDMA Control Register: Ultra DMA Mode Enabled
UDMA Timing Register: CT = 2 CLK / RP = 4 CLK
Base Clock: Ultra DMA 33 Timings