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1 Hardware Overview 1.4 Removable Drives
1.4.4 DVD Multi-Drive
The Matsushita UJ-811B DVD multi-drive is capable of driving either 12cm (4.72-inch) or
8cm (3.15-inch) DVDs and CDs without using an adaptor.
Read speed
DVD-ROM Max 8X CAV (MAX 10800 kB/s)
CD-ROM Max 24X CAV (MAX 3600 kB/s)
Write speed
CD-R : Max16X Zone CLV
CD-RW 4X CLV
High Speed CD-RW 8XCLV
DVD-R 2XCLV
DVD-RW 1X CLV
DVD-RAM 2X ZCLV ( 4.7GB)
Access Speed
DVD-ROM 180ms (Typ.) (Random)
CD-ROM 150ms(Typ.) (Random)
ATAPI Interface
PIO mode 16.6 MB/s :PIO mode4
DMA mode 16.6 MB/s :Multi word mode2
Ultra DMA mode 33.3 MB/s :Ultra DMA mode2
Buffer Memory 2MB
Supported formats
CD: CD-DA CD-ROM CD-R/W
CD-R CD-ROMXA CD-I Ready
Video CD PhotoCD(multi-session) Cd-Extra(CD+)
CD-TEXT
DVD: DVD-Video DVD-ROM DVD-R(3.9GB, 4.7GB)
DVD-RAM DVD-RW(Ver.1.1)
1-12 Satellite P20-25 Series Maintenance Manual