Range The range varies with the operating system and adapter.
Ultra Low Power Mode When Cable is Disconnected
Enabling Ultra Low Power (ULP) mode significantly reduces power consumption when the network cable is
disconnected from the device.
NOTE: If you experience link issues when two ULP-capable devices are connected back to back,
disable ULP mode on one of the devices.
Energy Efficient Ethernet
The Energy Efficient Ethernet (EEE) feature allows a capable device to enter Low-Power Idle between bursts
of network traffic. Both ends of a link must have EEE enabled for any power to be saved. Both ends of the link
will resume full power when data needs to be transmitted. This transition may introduce a small amount of
network latency.
NOTES:
l Both ends of the EEE link must automatically negotiate link
speed.
l EEE is not supported at 10 Mbps.
Wake on LAN Options
The ability to remotely wake computers is an important development in computer management. This feature
has evolved over the last few years from a simple remote power-on capability to a complex system interacting
with a variety of device and operating system power states.
Microsoft Windows Server is ACPI-capable. Windows does not support waking from a power-off (S5) state,
only from standby (S3) or hibernate (S4). When shutting down the system, these states shut down ACPI
devices, including Intel adapters. This disarms the adapter's remote wake-up capability. However, in some
ACPI-capable computers, the BIOS may have a setting that allows you to override the operating system and
wake from an S5 state anyway. If there is no support for wake from S5 state in your BIOS settings, you are
limited to Wake From Standby when using these operating systems in ACPI computers.
The Intel PROSet Power Management tab includes Wake on Magic Packet and Wake on directed packet
settings. These control the type of packets that wake up the system from standby.
For some adapters, the Power Management tab in Intel PROSet includes a setting called Wake on Magic
Packet from power off state. Enable this setting to explicitly allow wake-up with a Magic Packet* from
shutdown under APM power management mode.
NOTES:
l To use the Wake on Directed Packet feature, WoL must first be enabled in the EEPROM
using BootUtil.
l If Reduce speed during standby is enabled, then Wake on Magic Packet and/or Wake
on directed packet must be enabled. If both of these options are disabled, power is
removed from the adapter during standby.
l Wake on Magic Packet from power off state has no effect on this option.
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