Product guide
Table Of Contents
- Intel® Desktop Board DG31PR Product Guide
- Revision History
- Preface
- Contents
- 1 Desktop Board Features
- Supported Operating Systems
- Desktop Board Components
- Processor
- Main Memory
- Intel® G31 Express Chipset
- Audio Subsystem
- Legacy Input/Output (I/O) Controller
- LAN Subsystem
- Hi-Speed USB 2.0 Support
- Enhanced IDE Interface
- Serial ATA
- Expandability
- BIOS
- Hardware Management Features
- Power Management Features
- Speaker
- Battery
- Real-Time Clock
- 2 Installing and Replacing Desktop Board Components
- Before You Begin
- Installation Precautions
- Installing the I/O Shield
- Installing and Removing the Desktop Board
- Installing and Removing a Processor
- Installing and Removing Memory
- Installing and Removing a PCI Express x16 Card
- Connecting the Diskette Drive Cable
- Connecting the IDE Cable
- Connecting the Serial ATA (SATA) Cables
- Connecting to the Internal Headers and Connectors
- Connecting to the Audio System
- Connecting Chassis Fan and Power Supply Cables
- Setting the BIOS Configuration Jumper
- Clearing Passwords
- Replacing the Battery
- 3 Updating the BIOS
- A Error Messages and Indicators
- B Regulatory Compliance

Intel Desktop Board DG31PR Product Guide
16
Audio Subsystem
The onboard audio subsystem consists of the following:
• Intel
®
ICH7
• Realtek ALC888 audio codec
• Back panel audio connectors
• Onboard audio header/connector:
⎯ Intel High Definition audio front panel audio header
⎯ Onboard S/PDIF connector
The audio subsystem supports the following features:
• A signal-to-noise (S/N) ratio of 95 dB
• Independent multi-streaming 5.1 audio (using the back panel audio connectors)
and stereo (using the Intel High Definition front panel audio header)
Related Links:
Go to the following link or pages for more information about:
• Audio drivers and utilities
http://support.intel.com/support/motherboards/desktop/
• The location of the back panel audio connectors, Figure 22 on page 49