HP CQ40-421AX manual Applicable disc Read, Write, Access time, Cache buffer Data transfer rate

DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive specifications

Applicable disc	Read:
	CD-DA, CD+(E)G, CD-MIDI, CD-TEXT,
	CD-ROM, CD-ROM XA, MIXED MODE
	CD, CD-I, CD-I Bridge (Photo-CD, Video
	CD), MultiSession CD (Photo-CD,
	CD-EXTRA, Portfolio, CD-R, 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

Write:

CD-R and CD-RW

DVD+R, DVD+RW, DVD-R, DVD-RW,

DVD-RAM

Access time	CD	DVD
Random	< 175 ms	< 230 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
16X CD-RW	2,400 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

92 Chapter 6 Specifications