Chapter 2 System Overview
Compaq Deskpro Personal Computers
Third Edition – April 2001
2-20
2.4.10 AUDIO SUBSYSTEM
Models that feature an embedded AC’97 audio system uses the integrated AC97 audio controller
of the chipset and an AC’97-compliant audio codec. These systems include microphone and line
inputs and headphone and line outputs. The AC’97-equipped Slim Desktop and Configurable
Minitower models include a 3-watt output amplifier driving an internal speaker. The AC’97-
equipped Small Form Factor models feature Compaq Premier Sound consisting of a five-level
equalizer designed to compensate for chassis acoustics and a low-distortion 5-watt amplifier
driving a speaker for optimum sound. Models that do not include integrated AC’97 circuitry
provide legacy PC-beep audio support and may be upgraded with the installation of a PCI audio
card.
2.5 SPECIFICATIONS
This section includes the environmental, electrical, and physical specifications for the Compaq
Deskpro EN Series Personal Computers. Where provided, metric statistics are given in
parenthesis. All specifications subject to change without notice.
Table 2-5. Environmental Specifications
Table 2-5.
Environmental Specifications (Factory Configuration)
 
Parameter Operating Nonoperating 
Ambient Air Temperature   50
o
 to 95
o
 F (10
o
 to 35
o
 C, max. rate 
of change <
 10°C/Hr) 
-24
o
 to 140
o
 F (-30
o
 to 60
o
 C, max. rate 
of change <
 20°C/Hr ) 
Shock (w/o damage)  5 Gs [1]  20 Gs [1] 
Vibration  0.000215 G
2
/Hz, 10-300 Hz  0.0005 G
2
/Hz,  10-500 Hz 
Humidity  10-90% Rh @ 28
o
 C max. 
wet bulb temperature 
5-95% Rh @ 38.7
o
 C max. 
wet bulb temperature 
Maximum Altitude  10,000 ft (3048 m) [2]  30,000 ft (9,144 m) [2] 
NOTE:   
[1] Peak input acceleration during an 11 ms half-sine shock pulse. 
[2] Maximum rate of change: 1500 ft/min. 
Table 2-6. Electrical Specifications
Table 2-6.
Electrical Specifications
 
Parameter U.S. International 
Input Line Voltage: 
    Nominal: 
    Maximum: 
 
100 - 127 VAC 
90 - 132 VAC 
 
200 - 240 VAC 
180 - 264 VAC 
Input Line Frequency Range: 
    Nominal: 
    Maximum: 
 
50 - 60 Hz 
47 - 63 Hz 
 
50 - 60 Hz 
47 - 63 Hz 
Power Supply: 
    Maximum Continuous Power 
        Small Form Factor 
        Slim Desktop or Configurable Minitower 
    Maximum Line Current Draw 
        Small Form Factor 
        Slim Desktop or Configurable Minitower 
 
 
120 watts 
200 watts 
 
4.0 A 
6.0 A 
 
 
120 watts 
200 watts 
 
2.0 A 
3.0 A