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2SystemFeatures
Mass Storage Devices
Features of the
DVD-ROM Drive
(D7521A)
•CD-ROMMode-1datadisc.
• CD-ROM Mode-2 data disc (Mode 1 and Mode 2).
• Photo-CD Multisession.
• CD Audio disc.
• Mixed mode CD-ROM disc (data and audio).
• CD-ROM XA, CD-I, CD-Extra, CD-R, CD-RW.
• DVD-ROM, DVD-Video, DVD Audio, DVD-RAM.
NOTE If a disk is still in the drive after power failure or drive failure, the disk can be
reclaimed by inserting a straightened paper-clip into the small hole at the
bottom of the door.
DVD Region Codes
TheDVD-ROMdriveisonlyabletoplayDVDvideodiscsfromregions1and2
(see table below). DVD region settings can be changed up to 5 times.
Description
HP product number D7521A
Disc Diameter 120 mm
Storage Capacity 650 MB to 17 GB (depending on disk type)
Read Mode 8Xmax(DVD),40XmaxCD-ROM
Burst Transfer Rate PIO mode 4 - 16.6 Mbytes/s maximum
Single Word DMA Mode 2 - 8.3 Mbytes/s maximum
Multi Word DMA Mode 2 - 16.6 Mbytes/s maximum.
Access Time Average Stroke (1 / 3) 110 ms
Full Stroke 180 ms
Buffer Memory Size 128 kbytes
Rotational speed Approx. 7,300 rpm maximum
Region Codes Region
Supported by the
D4388A DVD Drive
1 USA & Canada Yes
2 Europe & Japan Yes
3 South East Asia No
4 Latin America & Australia No
5 Russia, Rest of Asia, Africa No
6 China No