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Specifications
Maintenance and Service Guide 6–5
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive specifications
System DMA specifications
Applicable disc Read: Write:
CD-DA, CD+(E)G, CD-MIDI,
CDTEXT, CD-ROM, CD-ROM
XA, MIXED MODE CD, CD-I,
CD-I Bridge (Photo- CD, Video
CD), Multisession CD
(Photo-CD, CD-EXTRA,
Portfolio, CDR, CD-RW),
CD-R, CD-RW, DVD-ROM
(DVD-5, DVD-9, DVD-10,
DVD-18), DVD-R, DVD-RW,
DVD+R, DVD+RW, DVD-RAM
CD-R and CD-RW
DVD+R, DVD+RW, DVD-R,
DVD-RW, DVD-RAM
Access time CD DVD
Random < 175 ms < 230 ms
Full stroke < 285 ms < 335 ms
Cache buffer 2 MB
Data transfer rate
24X CD-ROM 3,600 KB/sec
8X DVD 10,800 KB/sec
24X CD-R 3,600 KB/sec
8X DVD+R 10,800 KB/sec
4X DVD+RW 5,400 KB/sec
8X DVD-R 10,800 KB/sec
4X DVD-RW 5,400 KB/sec
2.4X DVD+R(9) 2,700 KB/sec
5X DVD-RAM 6,750 KB/sec
Transfer mode Multiword DMA Mode
Hardware DMA System function
DMA0 Not applicable
DMA1* Not applicable
DMA2* Not applicable
DMA3 Not applicable
DMA4 Direct memory access controller
DMA5* Available for ExpressCard
DMA6 Not assigned
DMA7 Not assigned
*ExpressCard controller can use DMA 1, 2, or 5.