B-12 | ni.com
Appendix B Hardware Configuration
Internal Speaker/Buzzer
The Internal Speaker/Buzzer (SP1) is used to provide audible indications for various beep codes.
Power SMB (I
2
C) Header
Power System Management Bus (I
2
C) header at JPI
2
C1 monitors the power supply, fan and
system temperatures.
4-pin BMC External I
2
C Header
A System Management Bus header for IPMI 2.0 is located at JIPMB1. Connect the appropriate
cable here to use the IPMB I
2
C connection on your system.
System Management Bus Header
A System Management Bus header for additional slave devices or sensors is located at JSMB1.
Table B-17. Internal Buzzer Pin Definitions
Pin Definition
1 Pos (+) Beep In
2 Neg (-) Alarm Speaker
Table B-18. Power SMB Pin Definitions
Pin Definition
1 Clock
2 Data
3 PMBUS_Alert
4 Ground
5 +3.3 V
Table B-19. External I
2
C Header Pin Definitions
Pin Definition
1 Data
2 GND
3 Clock
4 NC
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