Intel DP43TF Product Guide - Page 23
ENERGY STAR* Qualified, Speaker, Battery, Real-Time Clock - beep codes
UPC - 735858202046
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Desktop Board Features WAKE# Signal Wake-up Support When the WAKE# signal on the PCI Express bus is asserted, the computer wakes from an ACPI S1, S3, S4, or S5 state. ENERGY STAR* Qualified In 2007, the US Department of Energy and the US Environmental Protection Agency revised the ENERGY STAR requirements. Intel worked directly with these two governmental agencies to define the new requirements. This Desktop Board meets the ENERGY STAR Category B requirements. For information about the ENERGY STAR specifications, see: http://intel.com/go/energystar. Speaker A speaker is mounted on the Desktop Board. The speaker provides audible error code (beep code) information during the Power-On Self-Test (POST). Battery A battery on the Desktop Board keeps the values in CMOS RAM and the clock current when the computer is turned off. Go to page 53 for instructions on how to replace the battery. Real-Time Clock The Desktop Board has a time-of-day clock and 100-year calendar. The battery on the Desktop Board keeps the clock current when the computer is turned off. 23