Intel D875PBZ Product Guide - Page 24
Chassis Intrusion, Resume on Ring, Wake from USB, Wake from PS/2 Keyboard/Mouse, PME# Wakeup Support - - - processor support
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Intel Desktop Board D875PBZ Product Guide fans connected to the front and rear chassis fan connectors. The processor fan connector is not controlled. The fan speed control feature can be disabled in the BIOS, resulting in the chassis fans always operating at full speed. This feature should be disabled if a self-controlled fan is attached to a chassis fan connector. The overall system noise reduction will vary based on system configuration and environment. Chassis Intrusion The board supports a chassis security feature that detects if the chassis cover has been removed. The security feature uses a mechanical switch on the chassis that can be connected to the chassis intrusion header on the desktop board. Related Links: Go to page 46 for the location of the chassis intrusion header. Resume on Ring The operation of Resume on Ring can be summarized as follows: • Resumes operation from either ACPI S1 or ACPI S3 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 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. Wake from PS/2 Keyboard/Mouse PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state. PME# Wakeup Support When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or S5 state. 24