Intel S815EBM1 Product Guide - Page 16

RJ-45 LAN Connector LEDs Two LEDs are built into the RJ-45 LAN connector. Table 4 describes the LED states when the board is powered up and the LAN subsystem is operating. Table 4. RJ-45 LAN Connector LEDs LED Color Green Yellow LED State Off On Off On (steady state) On (brighter and pulsing) Indicates 10 Mbit/sec speed is selected. 100 Mbit/sec speed is selected. LAN link is not established. LAN link is established. The server is communicating with another server on the LAN. Battery A battery on the server board keeps the values in CMOS RAM and the clock current when the server is turned off. See Chapter 2 for instructions on how to replace the battery. Power Management Features Power management is implemented at several levels, including: • Software support:  Advanced Power Management (APM)  Advanced Configuration and Power Interface (ACPI) • Hardware support:  Wake on LAN technology  S5 wake on all PCI slots  Wake on Ring  Resume on Ring If the board is used with an ACPI-aware operating system, the BIOS can provide ACPI support. Otherwise, it defaults to APM support. Wake on LAN Technology The Wake on LAN technology connector can be used with PCI bus network adapters that have a remote wake-up connector. 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). See Figure 21 on page 68 for the location of the Wake on LAN technology connector on the server board. 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. 16 Intel Server Board S815EBM1 Product Guide