Biostar M7SXD M7SXD user's manual - Page 23
Front Panel Connector: JPANEL1, Assignment, Function
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Chapter 1 Motherboard Description 1.6.1 Front Panel Connector: JPANEL1 K SLP NA POW-LED ON/OFF E IR (+) (+) (-) Y 2 24 1 23 SPK (+) (-) HLED RST NA Pin Assignment No. 1 +5V 3 NA 5 NA 7 Speaker 9 HDD LED (+) 11 HDD LED (-) 13 Ground 15 Reset Control 17 NA 19 NA 21 +5V 23 IRTX Function Speaker Connector Hard Drive LED Reset Button IrDA Connector Pin Assignment No. 2 Sleep Control 4 Ground 6 NA 8 Power LED (+) 10 Power LED (+) 12 Power LED (-) 14 Power Button 16 Ground 18 KEY 20 KEY 22 Ground 24 IRRX Function Sleep Button POWER LED Power-on Button IrDA Connector SPK (Speaker Connector) An offboard speaker can be installed on the motherboard as a manufacturing option. It can be connected to the motherboard at the front panel connector. The speaker (onboard or offboard) provides error beep code information during the Power On Self-Test when the computer cannot use the video interface. The speaker is not connected to the audio subsystem and does not receive output from the audio subsystem. 1-18