Back Panel Features; Figure 4. Back Panel Features; Table 3. Nic Leds - Intel S5520SC - Workstation Board Motherboard Service Manual

Workstation Board Features
Jumper Name Pins
BMC Force 1-2 (Default)
Update
(J1H1)
2-3
Serial Port A 1-2(Default)
Configuration
2-3
(J4B2)

Back Panel Features

A. POST Diagnostic LEDs
B. Serial A Port (top), IEEE 1394a port
(bottom)
C. ID LED
D. System Status LED
E. Audio: back surround out
F. Audio: center/LFE out
The NIC LEDs at the right and left of each NIC provide the following information.
NIC
NIC 1 and NIC 2
(Gigabit)
6
What happens at system reset
from EFI-bootable recovery media with a recovery BIOS image present.
These pin should not be connected for normal system operation.
BMC Firmware Force Update Mode – Disabled.
These pins should have a jumper in place for normal system operation.
BMC Firmware Force Update Mode – Enabled.
These pins should not be connected for normal operation.
Rear RJ-45 Serial A port is configured for DSR to DTR.
Rear RJ-45 Serial A port is configured for DCD to DTR.
G. Audio: side surround out
H. Audio: front surround out
I. Audio: microphone in
J. Audio: line-in
K. NIC 1 (top, default management port), Two USB (bottom)
L. NIC 2 (top), Two USB (bottom)

Figure 4. Back Panel Features

Table 3. NIC LEDs

LED Color LED State
Off
Left LED
Blinking Green
Off
Right LED Solid Green
Solid Amber
Description
No network connection
Transmit/receive activity
10 Mbps connection (if left LED is on or blinking)
100 Mbps connection
1000 Mbps connection
Intel® Workstation Board S5520SC Service Guide