Battery; Real-Time Clock - Intel D2550DC2 Product Manual

Intel Desktop Board D2550DC2 Product Guide
LAN Wake Capabilities
The board's LAN wake capabilities enable remote wake-up of the computer through a
network. The LAN subsystem network adapter monitors network traffic at the Media
Independent Interface. The board supports LAN wake capabilities with ACPI in the
following ways:
By Ping
•
• By Magic Packet
Upon detecting the configured wake packet type, the LAN subsystem asserts a wake-
up signal that powers up the computer.
Wake from USB
USB bus activity wakes the computer from an ACPI S1 or S3 state.
NOTE
Wake from USB requires the use of a USB peripheral that supports wake from USB.
PME# Wakeup Support
When the PME# signal is asserted on the PCI bus, the computer wakes from an ACPI
S1, S3, S4, or S5 state.
WAKE# Signal Wakeup Support
When the WAKE# signal is asserted on the PCI Express bus, the computer wakes from
an ACPI S1, S3, S4, or S5 state.

Battery

A coin-cell battery on the Desktop Board keeps the values in CMOS RAM and the clock
current when the computer is turned off. Go to page 41 for instructions on how to
replace the battery.

Real-Time Clock

The Desktop Board includes a time-of-day clock and a 100-year calendar. The coin-
cell battery keeps the clock current when the computer is turned off.
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