Technical Product Specification

Functional Architecture Intel® Server Board S5520UR and S5520URT TPS
Intel order number E44031-012 Revision 1.9
38
Dual Monitor Video
Enabled
Disabled
Shaded if on-board video is set to "Disabled"
3.8 Network Interface Controller (NIC)
Network interface support is provided from the on-board Intel
®
82575EB NIC, which is a single,
compact component with two fully integrated GbE Media Access Control (MAC) and Physical
Layer (PHY) ports. The on-board Intel
®
82575EB NIC provides the server board with support for
dual LAN ports designed for 10/100/1000 Mbps operation.
The Intel
®
82575EB device provides a standard IEEE 802.3 Ethernet interface for 1000BASE-T,
100BASE-TX, and 10BASE-T applications (802.3, 802.3u, and 802.3ab). The Intel
®
82575EB
device is capable of transmitting and receiving data at rates of 1000 Mbps, 100 Mbps,
or 10 Mbps.
Each network interface controller (NIC) drives two LEDs located on each network interface
connector (J6A1, J5A2). The link/activity LED (at the right of the connector) indicates network
connection when on, and transmit/receive activity when blinking. The speed LED (at the left of
the connector) indicates 1000-Mbps operation when amber, 100-Mbps operation when green,
and 10-Mbps when off. The following table provides an overview of the LEDs.
Table 12. NIC2 Status LED
LED Color
LED State
NIC State
Green/Amber (Left)
Off
10 Mbps
Green 100 Mbps
Amber 1000 Mbps
Green (Right)
On Active Connection
Blinking
Transmit/Receive activity
3.8.1 MAC Address Definition
Each Intel
®
Server Board S5520UR, S5520URT has the following four MAC addresses
assigned to it at the Intel
®
factory.
 NIC 1 MAC address
 NIC 2 MAC address – Assigned the NIC 1 MAC address +1
 Integrated BMC LAN Channel MAC address – Assigned the NIC 1 MAC address +2
 Intel
®
Remote Management Module 3 (Intel
®
RMM3) MAC address – Assigned the NIC
1 MAC address +3
During the manufacturing process, each server board has a white MAC address sticker
included with the board. The sticker displays the NIC 1 MAC address in both bar code and
alphanumeric formats, and displays the Intel
®
RMM3 MAC address in alphanumeric format.