HP DC7900 - Manual (Page 55)

Disc capacity Disc capacity Disc capacity 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 Dimensions Dimensions 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 Weight Weight Weight (max) 2.6 lb (1.2 kg)
Read speeds Read speeds Read speeds Read speeds DVD+R/-R/+RW/ DVD+R/-R/+RW/ DVD+R/-R/+RW/ DVD+R/-R/+RW/
-RW/+R DL /-R DL
-RW/+R DL /-R DL -RW/+R DL /-R DL -RW/+R DL /-R DL
Up to 8X
DVD-ROM DVD-ROM DVD-ROM DVD-ROM Up to 16X
DVD-RAM DVD-RAM DVD-RAM DVD-RAM Up to 4X
CD-ROM, CD-R CD-ROM, CD-R CD-ROM, CD-R CD-ROM, CD-R Up to 48X
CD-RW CD-RW CD-RW CD-RW Up to 32X
Removable Storage - Removable Storage - Removable Storage - Removable Storage -
Media Compatibility -
Media Compatibility - Media Compatibility - Media Compatibility -
DVD-ROM
DVD-ROM DVD-ROM DVD-ROM
Media Media Media Media Read Read Read Read Write Write Write Write
CD-ROM CD-ROM CD-ROM CD-ROM Yes No
CD-R CD-R CD-R CD-R Yes No
CD-RW CD-RW CD-RW CD-RW Yes No
DVD-ROM DVD-ROM DVD-ROM DVD-ROM Yes No
DVD-ROM DL DVD-ROM DL DVD-ROM DL DVD-ROM DL Yes No
DVD-RAM DVD-RAM DVD-RAM DVD-RAM Yes No
DVD+R DVD+R DVD+R DVD+R Yes No
DVD+R DL DVD+R DL DVD+R DL DVD+R DL Yes No
DVD+RW DVD+RW DVD+RW DVD+RW Yes No
DVD-R DVD-R DVD-R DVD-R Yes No
DVD-RW DVD-RW DVD-RW DVD-RW Yes No
DVD-R DL DVD-R DL DVD-R DL DVD-R DL Yes No
Access times Access times Access times Access times
(typical reads, including
setting) Random Random Random Random DVD: < 140 ms (typical), CD: < 125 ms
(typical)
Full Stroke Full Stroke Full Stroke Full Stroke DVD: < 250 ms (seek), CD: < 210 ms (seek)
Cache Buffer Cache Buffer Cache Buffer Cache Buffer 2 MB (minimum)
Data Transfer Modes Data Transfer Modes Data Transfer Modes 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 Power Power Power Source Source Source Source SATA DC power receptacle
DC Power Requirement DC Power Requirement DC Power Requirement DC Power Requirement 5 VDC ± 5%-100 mV ripple p-p
12 VDC ± 5%-200 mV ripple p-p
DC Current DC Current DC Current DC Current 5 VDC - <1000 mA typical, < 1600 mA
maximum
12 VDC -< 600 mA typical, < 1400 mA
maximum
Environmental Environmental Environmental Environmental
(all conditions
non-condensing) Temperature Temperature Temperature Temperature 41° to 122° F (5° to 50° C)
Relative Humidity Relative Humidity Relative Humidity Relative Humidity 10% to 90%
Maximum Wet Bulb Maximum Wet Bulb Maximum Wet Bulb Maximum Wet Bulb
Temperature
Temperature Temperature Temperature
86° F (30° C)
SATA Slim SuperMulti SATA Slim SuperMulti SATA Slim SuperMulti SATA Slim SuperMulti Height Height Height Height 12.7mm height
QuickSpecs
HP Compaq dc7900 Business PC HP Compaq dc7900 Business PC HP Compaq dc7900 Business PC HP Compaq dc7900 Business PC
Technical Specifications - Optical Storage
DA - 13029 North America — Version 15 — March 30, 2009 Page 55