Compaq dc7800 - Manual (Page 41)

SATA DVD-ROM Drive Height 5.25-inch, half-height, tray-load
Orientation Either horizontal or vertical
Interface type SATA/ATAPI
Disc capacity Single layer: Up to 4.7 GB (6 times capacity of CD-ROM)
Double layer: Up to 8.5 GB (12 times capacity of CD-ROM)
Dimensions (W x H x D) 5.9 x 1.7 x 8.0 in (15.0 x 4.4 x 20.3 cm)
Weight (max) 2.6 lb (1.2 kg)
Read speeds DVD+R/-R/+RW/
-RW/+R DL /-R DL Up to 8X
DVD-ROM Up to 16X
DVD-RAM Up to 4X
CD-ROM, CD-R Up to 48X
CD-RW Up to 32X
Removable Storage –
Media Compatibility –
DVD-ROM Media Read Write
CD-ROM Yes No
CD-R Yes No
CD-RW Yes No
DVD-ROM Yes No
DVD-ROM DL Yes No
DVD-RAM Yes No
DVD+R Yes No
DVD+R DL Yes No
DVD+RW Yes No
DVD-R Yes No
DVD-RW Yes No
DVD-R DL Yes No
Access times
(typical reads, including
setting) Random DVD: < 140 ms (typical), CD: < 125 ms
(typical)
Full Stroke DVD: < 250 ms (seek), CD: < 210 ms (seek)
Cache Buffer 2 MB (minimum)
Data Transfer Modes ATA PIO mode 4 (16.7 MB/s); ATA Multi-word
DMA mode 2 (16.7 MB/s); ATA UltraDMA
Mode 3 (44.4 MB/s -default)
Power Source SATA DC power receptacle
DC Power Requirement5 VDC ± 5%-100 mV ripple p-p
12 VDC ± 5%-200 mV ripple p-p
DC Current 5 VDC – <1000 mA typical, < 1600 mA
maximum
12 VDC –< 600 mA typical, < 1400 mA
maximum
Environmental
(all conditions
non-condensing) Temperature 41° to 122° F (5° to 50° C)
Relative Humidity 10% to 90%
Maximum Wet Bulb
Temperature 86° F (30° C)
QuickSpecs
HP Compaq dc7800 Business PC
Technical Specifications - Optical Storage
DA - 12744 Worldwide QuickSpecs — Version 13 — 12.14.2007 Page 41