a few more details:
Sound Devices
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Description: Speakers (High Definition Audio Device)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_11D4&DEV_1981&SUBSYS_17AA2025&REV_1002
Manufacturer ID: 1
Product ID: 65535
Type: WDM
Driver Name: HdAudio.sys
Driver Version: 6.01.7601.17514 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 11/20/2010 12:00:21, 304128 bytes
Other Files:
Driver Provider: Microsoft
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Description: Digital Audio (S/PDIF) (High Definition Audio Device)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_11D4&DEV_1981&SUBSYS_17AA2025&REV_1002
Manufacturer ID: 1
Product ID: 65535
Type: WDM
Driver Name: HdAudio.sys
Driver Version: 6.01.7601.17514 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 11/20/2010 12:00:21, 304128 bytes
Other Files:
Driver Provider: Microsoft
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
---------------------
Sound Capture Devices
---------------------
Description: Microphone (High Definition Audio Device)
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: HdAudio.sys
Driver Version: 6.01.7601.17514 (English)
Driver Attributes: Final Retail
Date and Size: 11/20/2010 12:00:21, 304128 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF