System Features
Optical Drives
The Compaq Evo D310 Micro Desktop is available with a choice of optical drives:
•CD-RW drive: 40X, 10X, 40X IDE (DLA and MyCD software from Veritas included)
•DVD-ROM drive: 16X, 40X IDE (WinDVD MPEG2 decoding software from InterVideo included)
•CD-ROM drive: 48X IDE.
These drives can also be purchased as accessories. Refer to www.hp.com/go/pcaccessories.
Features of the CD-RW Drive
• Supported CD-ROM formats: | |
• CD-ROM Mode-1 data disc | |
• CD-ROM Mode-2 data disc | |
• CD-ROM XA | |
• | CD Audio disc | |
• | Video CD | |
• | CD-I | |
• | CD-I Ready | |
• | CD-I Bridge | |
• | CD-WO | |
• Enhanced Music CD (CD Plus) | |
• Photo CD Multi-session. | |
• Interface type: E-IDE/ATAPI. | |
| | | |
| | | Description |
| | | |
| | Data Transfer Rate | Sustained Data Transfer Rate |
| | (1 KB=210 byte=1,024 bytes) | Writing CD-RW - 40✕ = 6,000 KB/s (Max) |
| | |
| | (1 MB=220 byte=1,048,576 bytes) | Writing CD-R - 10✕ = 1,500 KB/s (Max) |
| | | Reading - 40✕= 6,000 KB/s (Max) |
| | | |
CD-RW Technology
CD-RW drives use a technology known as optical phase-change. It does not use magnetic fields like the phase-change technology used with magneto-optical technology. The media are generally distinguishable from CD-R discs by their metallic grey color. The basic structure of the discs, however, is the same as a CD-R disc but with significant detail differences. A CD-RW disc's phase-change medium consists of a polycarbonate substrate, moulded with a spiral groove for servo guidance, absolute time information and other data, on to which a stack (usually five layers) is deposited. The recording layer is sandwiched between dielectric layers that draw excess heat from the phase-change layer during the writing process. In place of the dye-based recording layer on a CD-R disc, CD-RW commonly uses a crystalline compound made up of a mix of silver, indium, antimony and tellurium. This mix, when heated to a certain temperature and then cooled becomes crystalline, but if heated to a higher temperature it becomes amorphous when it cools down again. The crystalline areas allow the metallized layer to reflect the laser light better while the non-crystalline portion absorbs the laser beam, and is therefore not reflected.
Evo D310 Micro Desktop 25
