Specifications

QSSC-S4R Technical Product Specification Front Panel Fan Board (FPFB) and Operator Panel
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3 LED_ID_P 9 LED_STBY_P
4 SW_NMI_N 10 LED_MAIN_P
5 SW_RST_N 11 SW_PWR_N
6 LED_STAT_P 12 GND
Table 74. USB Header to Front Panel Signal Description and Pinouts
Pin Description Pin Description
1 Key Pin 8 USB_ICH_P1N_FP
2 NC 9 USB_ICH_P1P_FP
3 USB_FP_5V_PWR012 10 GND
4 USB_ICH_P2N_FP 11 USB_FP_5V_PWR012
5 USB_ICH_P2P_FP 12 USB_ICH_P0N_FP
6 GND 13 USB_ICH_P0P_FP
7 USB_FP_5V_PWR012 14 GND
Table 75. System ID/Temperature Combo Board Signal Description and Pinouts
Pin Description
1 SMB_SYS_BRD_3V3SB_DAT
2 P3V3_AUX
3 GND
4 SMB_SYS_BRD_3V3SB_CLK
14.2.2 LED Description
The QSSC-S4R front panel fan board (FPFB) 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 Board. The table below shows the LED functionality.
Table 76. LED functionality for each LAN port at the rear
LED Color/LED Behavior State
LAN #1, 2, 3 & 4
Off Idle
Green Blink LAN access
Green On LAN link/no access
14.3 Front Panel Control
14.3.1 System ID Buttons and LEDs