Filter
Top Products
Description 27
Power Management Features
Power management is implemented at several levels, including:
• Software support through Advanced Configuration and Power Interface (ACPI)
• Hardware support:
Power connector
Fan connectors
LAN wake capabilities
Instantly Available PC technology
Resume on Ring
Wake from USB
Wake from PS/2 devices
Power Management Event (PME#) wake-up support
Wake on LAN Technology
Network adapters that are PCI 2.2 compliant assert the wake-up signal using the PCI bus signal
PME# (pin A19 on the PCI bus connectors).
CAUTION
For Wake on LAN technology, the 5 V standby line for the power supply
must be capable of providing adequate +5 V standby current. Failure to
provide adequate standby current when implementing Wake on LAN
technology can damage the power supply.
CAUTION
If the standby current necessary to support multiple wake events from the
PCI and/or USB buses exceeds power supply capacity, the server board may
lose register settings stored in memory, etc.
Wake on Ring
The operation of Wake on Ring can be summarized as follows:
• Powers up the server from the ACPI S5 state.
• Modem must support PME.
• Requires two calls to access the server:
The first call powers up the server
The second call enables access (when the appropriate software is loaded)
• For external modems, hardware on the server board monitors the ring indicate (RI) input of the
serial port.