Product guide

Chapter 1: System Description QSSC-S4R Server System Product Guide
Version 1.0
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 TMP75 Ambient air sensor
 FRU information EEPROM
 Four individual LAN Act/Link LEDs indicating LAN status of the four LAN ports at the rear, routed from the
I/O Riser.
 Thermal sensor
 Hot swap fan noise immunity circuitry
 Easy removable fan bay to access the fan board

Item Description
A 2X20 Pin Fan Signal
B 2X2 Pin Fan Power
C 1X8 Pin Hot Swap Back Plane Power
D 2X20 Pin Front Panel to Main Board
E 2X7 Pin USB to Main Board
F Fan Hot Swap Power Connectors 1-8
G Front Panel LEDs and I/O Ports (see “Figure 4. Operator Panel Controls and
Indicators” for details)
Figure 24. Front Panel Fan Board Component Locations
The S4R front panel fan board also provides individual LAN Act/Link LEDs indicating LAN status of the four LAN
ports at the rear with signals routed from the I/O Riser. The table below shows the LED functionality.
LED Color/LED Behavior State
LAN #1, 2, 3 & 4 Off Idle
Green Blink LAN access
Green On LAN link/no access
Operator Panel
The operator panel (OP Panel) communicates with the front panel fan board (FPFB) via a cable with a 12-pin
connector. It houses the buttons and LEDs described in “Operator Panel / Front Control Panel” on page 5.
The operator panel provides end user access to the system ID, power, re-set and NMI switches. In addition to
the features described in Error! Reference source not found., the operator panel also features:
 Tool-less installation/removal of board
 Connection via a 2x6 connector with the front panel fan board