IBASE MB941 - Manual (Page 23)

INSTALLATIONS
MB941 User’s Manual 19
J7: Audio Front Header
Signal Name Pin # Pin # Signal Name
MIC2_L 1 2 Ground
MIC2_R 3 4 Presence#
Line2_L 5 6 MIC2_ID
Sense 7 8 NC
Line2_R 9 10 Line2_ID
J8: System Function Connector
J8 provides connectors for system indicators that provide light indication
of the computer activities and switches to change the computer status. J8
is a 20-pin header that provides interfaces for the following functions.
Hard Disk Drive LED
Reset Switch
Not Defined
ATX Power On Switch
Not Defined
Power LED
Speaker
Speaker: Pins 1 - 4
This connector provides an interface to a speaker for audio
tone generation. An 8-ohm speaker is recommended.
Pin # Signal Name
1 Speaker out
2 No connect
3 Ground
4 +5V