Specifications

QSSC-S4R Technical Product Specification Power Distribution Board (PDB)
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13. Power Distribution Board (PDB)
This section describes the Quanta® Server System S4R power distribution board (PDB).
13.1 Introduction
The QSSC-S4R power distribution board (PDB) is designed to plug directly to the output connectors of the power
supply unit (PSU) and it contains the control logic supporting the cold redundancy feature, along with 240VA additional
protection circuitry for one of the outputs and a FRU EEPROM.
Figure 54. Power Distribution Board Connectors
Table 52. Power Distribution Board Connector Location
Item Description
A Power supply edge connection: PSU#1
B Power supply edge connection: PSU#2
C Power supply edge connection: PSU#3
D Power supply edge connection: PSU#4
E 2X6 pin PCIe / Chipset Power
F 2X8 pin CPU/DIMM Power
G Cold Redundancy Jumper
H 2X4 pin HSBP/Fan Power
I 2X2 pin CPU/DIMM Power
J 2X8 pin CPU/DIMM Power
K 2X17 pin Power Control Land Pattern, Uses 2X13
Connector
L 2X8 pin CPU/DIMM Power
The QSSC-S4R PDB is designed to support the hot swap 850W 2+2 and 3+1 redundant power supply. Below is the
numbering for the QSSC-S4R power supply. Refer to 9.6.9 “Component Enumeration” section for detail.