HP Compaq dc7800 - Routine Care

CD-R Up to 24X
CD-RW Up to 16X
Read speeds DVD-RAM Up to 5X
DVD-RW, DVD+RW Up to 8X
DVD-R DL, DVD+R DL Up to 6X
DVD+R, DVD-R Up to 8X
DVD-ROM DL, 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: < 140 ms (typical), CD: < 125 ms (typical)
Full Stroke DVD: < 250 ms (seek), CD: < 210 ms (seek)
Stop Time < 4 seconds
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 Four-pin, DC power receptacle
DC Power Requirement 5 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)
Total Drive Power
(standby mode)
< 2.5 Watt
Audio output Line-Out 0.7 VRMS
Signal-to-Noise Ratio 74 dB
Channel Separation 65 dB
Environmental conditions
(operating – 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 North America — Version 33 — October 29, 2008 Page 56