NEC Express5800 series User Manual page 30

Network Controller
To ensure EMC product regulation compliance, the system must
NOTE:
be used with a shielded LAN cable.
The motherboard uses two Intel® 82546EB Fast Ethernet Controllers and supports
10Base-T/100Base-TX/1000Base-T network subsystems.
The 82546 EB controller supports the following features:
64-bit, 100 MHz PCI-X interface
Integrated IEEE 802.3 10Base-T, 100Base-TX, and 1000Base-T compatible PHY
IEEE 820.3u auto-negotiation support
Chained memory structure similar to the 82559, 82558, 82557 and 82596
Full duplex support at both 10 Mbps, 100 Mbps, and 1000 Mbps operation
Low power +3.3 V device
On the system board, NIC 1 can be used as both a network interface and server management
interface.
20 System Overview