HP Compaq dc7900 Quickspecs page 56

QuickSpecs
Technical Specifications - Optical Storage
SATA DVD-ROM Drive Height
Orientation
Interface type
Disc capacity
Dimensions (W x H x D)
Weight (max)
Read speeds
Removable Storage -
Media Compatibility -
DVD-ROM
Access times
(typical reads, including
setting)
Power
Environmental
(all conditions
non-condensing)
DA - 13029 Canada — Version 29 — March 7, 2011
5.25-inch, half-height, tray-load
Either horizontal or vertical
SATA/ATAPI
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)
5.9 x 1.7 x 8.0 in (15.0 x 4.4 x 20.3 cm)
2.6 lb (1.2 kg)
DVD+R/-R/+RW/
-RW/+R DL /-R DL
DVD-ROM
DVD-RAM
CD-ROM, CD-R
CD-RW
Media
CD-ROM
CD-R
CD-RW
DVD-ROM
DVD-ROM DL
DVD-RAM
DVD+R
DVD+R DL
DVD+RW
DVD-R
DVD-RW
DVD-R DL
Random
Full Stroke
Cache Buffer
Data Transfer Modes
Source
DC Power Requirement
DC Current
Temperature
Relative Humidity
Maximum Wet Bulb
Temperature
HP Compaq dc7900 Business PC
Up to 8X
Up to 16X
Up to 4X
Up to 48X
Up to 32X
Read Write
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
DVD: < 140 ms (typical), CD: < 125 ms (typical)
DVD: < 250 ms (seek), CD: < 210 ms (seek)
2 MB (minimum)
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)
SATA DC power receptacle
5 VDC ± 5%-100 mV ripple p-p
12 VDC ± 5%-200 mV ripple p-p
5 VDC - <1000 mA typical, < 1600 mA maximum
12 VDC -< 600 mA typical, < 1400 mA maximum
41° to 122° F (5° to 50° C)
10% to 90%
86° F (30° C)
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