B&B Electronics PC Watchdog Timer Card ATXWDT Spezifikationen Seite 59

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Intel
®
SRMK2 Internet Server Technical Product Specification 59
6 SCSI Backplane
6.1 Introduction
The SCSI backplane provides nine fan headers for the system fans, two SCSI SCA drive
connectors, and a power connector for the optional CDROM. This board is located between the
system fans and the front drive bays. The figure below depicts the layout of the SCSI backplane.
Fan 8 Power
Backplane Power
Connector
Fan 1 Power
Fan 2 Power
Fan 7 Power
Fan 4 Power
Fan 6 Power
Backplane
Baseboard Conn
CDROM Pwr
Connector
SCSI Backplane
Conn
Fan 9 Power
Fan 5 Power
SCA SCSI
Conn 0
Fan 3 Power
SCA SCSI
Conn 1
Figure 22: SCSI Backplane
Table 45: Fan 1-9 Power Connectors
Pin Signal Name Wire
1 +12V Yellow
2 Ground Black
3 Fan Tach Red
Table 46: Backplane Power Connector
Pin Signal Name Wire
1 +12V Yellow
2 +12V Yellow
3 Ground Black
4 Ground Black
5 +3.3V Orange
6 +5V Red
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