Intel D845HV Product Guide - Page 18
Resume on Ring, Instantly Available Technology, CAUTION - desktop board
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Intel Desktop Boards D845HV and D845WN Product Guide Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from the ACPI S1 state • Requires only one call to access the computer • Detects incoming call similarly for external and internal modems • Requires modem interrupt be unmasked for correct operation Instantly Available Technology CAUTION For Instantly Available technology, the 5 V standby line for the power supply must be capable of delivering adequate +5 V standby current. Failure to provide adequate standby current when using this feature can damage the power supply and/or effect ACPI S3 sleep state functionality. Instantly Available technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep state. While in the S3 sleep state, the computer will appear to be off. When signaled by a wake-up device or event, the system quickly returns to its last known awake state. The board's standby power indicator, shown in Figure 3, is lit when there is standby power to the system. This includes the memory modules and PCI bus connectors, even when the computer appears to be off. If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the LED turning amber. CR3H1 OM11979 Figure 3. Location of Standby Power Indicator 18