Appendix E Connector Pinouts E-11
E.8 Flex Cable Power Distribution Board
Connector
The power distribution board (PDB) brings power from the chassis power supplies to
the motherboard. The main power connection to the motherboard is through two bus
bars. The PS_KILL signals for the power supplies are grounded on the PDB to
permanently enable the AUX output. The flex cable PDB connector pins and their
corresponding descriptions are shown in the figure and table in this section.
FIGURE E-8 Flex Cable PDB Connector
TABLE E-8 Flex Cable PDB Connector Pinouts
Pin Number Signal Name
1 PS1_PRESENT_L
2 PS1_ENABLE_L
3 SAS_FAN_TACH
4 PS1_VIN_GOOD
5 SAS_FAN_PRSNT_L
6 PS1_POWEROK
7 PDB_I2C_DAT
8 PS_KILL
9 PDB_I2C_CLK
10 +3.3V AUX
11 GND
12 +3.3V AUX
13 GND
14 +3.3V AUX
15 PS0_PRESENT_L
16 PS0_ENABLE_L
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