Sony PCV-R553DS Reference Manual - Page 118
Drives and Controllers, System BIOS, EIDE drives and Ultra DMA/66 Mode drives - vaio model
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104 VAIO Digital Studio™ Reference Manual Drives and Controllers Diskette controller Diskette drive EIDE controller IDE hard drive* DVD-ROM drive‡ CD-RW drive** 82077-compatible (supports up to 2.88 MByte) 1.44 MByte 3.5-inch MFDD Supports up to four EIDE drives (supports PIO Mode 4 EIDE drives and Ultra DMA/66 Mode drives) 30.0 GByte† DVD-ROM read: 16X (maximum performance). CD-ROM read: 40X (maximum performance). CD-RW read: 20X (maximum performance). CD-RW write: 4X (maximum performance). CD-R read: 32X (maximum performance). CD-R write: 8X (maximum performance). CD-ROM read: 32X (maximum performance). * Bus-mastering EIDE driver installed. † GB means one billion bytes when referring to hard drive capacity. Accessible capacity may vary. ‡ Data on a DVD-ROM is read at a variable transfer rate, ranging from 6.6X at the innermost track to 16X at the outermost track (the data transfer standard 1X rate is 1350 kbytes/s). The average data transfer rate is 11.3X (15,255 kbytes/s). Data on a CD-ROM is read at a variable transfer rate, ranging from 17.2X at the innermost track to 40X at the outermost track (the data transfer standard 1X rate is 150 kbytes/s). The average data transfer rate is 28.6X (4293 kbytes/s). ** CD-RW writing speed may vary, depending on the media. The maximum writing speed is 8X (1X = 150 kbytes/s). The maximum reading speed is 20X. System BIOS Make and model ROM Passwords Power management Advanced features Plug and Play devices Special features Award-based 4 Mbit flash-ROM User and supervisor passwords supported APM 1.2 ACPI-1.0 compliant hardware for use with APM and PNP BIOS APIs Supported with steerable DMA channels and interrupts PC-99 compliant, multi-boot, PCI add-in card autoconfigure