HP DC7900 - Manual (Page 57)

Environmental conditions Environmental conditions Environmental conditions Environmental conditions
(operating - 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 CD-RW/DVD-ROM SATA CD-RW/DVD-ROM SATA CD-RW/DVD-ROM SATA CD-RW/DVD-ROM
Combo Slim Drive
Combo Slim Drive Combo Slim Drive Combo Slim Drive
Height Height Height Height 12.7mm height slim CD-RW
Orientation Orientation Orientation Orientation Either horizontal or vertical
Interface type Interface type Interface type Interface type SATA/ATAPI
Disc capacity Disc capacity Disc capacity Disc capacity Single layer: Up to 4.7 GB (6 times capacity of CD-ROM)
Dimensions Dimensions Dimensions Dimensions (W x H x D) 5.0 x 0.5 x 5.0 in (128 x 13.6 x 129 mm)
Weight Weight Weight Weight (max) 0.42 lb (190 g)
Write speeds Write speeds Write speeds Write speeds CD-R CD-R CD-R CD-R Up to 24X
CD-RW CD-RW CD-RW CD-RW Up to 24X
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 4X
DVD-ROM DVD-ROM DVD-ROM DVD-ROM Up to 8X
CD-ROM, CD-R CD-ROM, CD-R CD-ROM, CD-R CD-ROM, CD-R Up to 24X
CD-RW CD-RW CD-RW CD-RW Up to 24X
Access time Access time Access time Access time
(typical reads, including
settling) Random DVD Random DVD Random DVD Random DVD DVD: < 140 ms (typical), CD: < 125 ms
(typical)
Random CD Random CD Random CD Random CD DVD: < 250 ms (typical), CD: < 210 ms
(typical)
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); ATA Multi-word DMA mode
2; ATA UltraDMA mode 0; ATA UltraDMA mode
1, mode 2; ATA UltraDMA Mode 3 (default)
Power Power Power Power Source Source Source Source Four-pin, DC power receptacle
DC Power Requirement DC Power Requirement DC Power Requirement DC Power Requirement 5 VDC ± 5%-100 mV ripple p-p
DC Current DC Current DC Current DC Current 5 VDC (< 1000 mA typical, < 1600 mA
maximum)
Total Drive Power Total Drive Power Total Drive Power Total Drive Power
(standby mode) < 2.5 Watt
Audio output level Audio output level Audio output level Audio output level 0.7 Vrms (typical)
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 5% to 85%
Maximum Wet Bulb Maximum Wet Bulb Maximum Wet Bulb Maximum Wet Bulb
Temperature
Temperature Temperature Temperature (operating)
86° F (30° C)
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 57