HP QUICKSPECS DC7900 - Manual (Page 54)

SATA CD-RW/DVD-
ROM Combo Slim Drive Height 12.7mm height slim CD-RW
Orientation Either horizontal or vertical
Interface type SATA/ATAPI
Disc capacity Single layer: Up to 4.7 GB (6 times capacity of CD-ROM)
Dimensions (W x H x D) 5.0 x 0.5 x 5.0 in (128 x 13.6 x 129 mm)
Weight (max) 0.42 lb (190 g)
Write speeds CD-R Up to 24X
CD-RW Up to 24X
Read speeds DVD+R/-R/+RW/
-RW/+R DL /-R DL Up to 4X
DVD-ROM Up to 8X
CD-ROM, CD-R Up to 24X
CD-RW Up to 24X
Access time
(typical reads, including
settling) Random DVD DVD: < 140 ms (typical), CD: < 125 ms
(typical)
Random CD DVD: < 250 ms (typical), CD: < 210 ms
(typical)
Cache Buffer 2 MB (minimum)
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 Source Four-pin, DC power receptacle
DC Power Requirement5 VDC ± 5%-100 mV ripple p-p
DC Current 5 VDC (< 1000 mA typical, < 1600 mA
maximum)
Total Drive Power
(standby mode) < 2.5 Watt
Audio output level 0.7 Vrms (typical)
Environmental (all
conditions non-
condensing) Temperature 41° to 122° F (5° to 50° C)
Relative Humidity 5% to 85%
Maximum Wet Bulb
Temperature (operating) 86° F (30° C)
QuickSpecs
HP Compaq dc7900 Business PC
Technical Specifications - Optical Storage
DA - 13029 Worldwide QuickSpecs — Version 24 — 10/30/2009 Page 54