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Item Description A Audio line in B Audio line out C Mic in Figure 4. Back Panel Audio Connector Options The back panel audio connectors are configurable through the audio device drivers. For information about Refer to The back panel audio connectors Section 2.2.1, page 44 The front panel headphone output is supported using a separate audio channel pair allowing multi-streaming audio configurations such as simultaneous 5.1 surround playback and stereo audio conferencing (through back panel speakers and a front panel headset, respectively). 1.11.2.2 S/PDIF Header The S/PDIF header allows connections to optical dongles for digital audio output. 1.11.2.3 Internal Mono Speaker Header The internal mono speaker header allows connection to an internal, low-power speaker for basic system sound capability. The subsystem is capable of driving a speaker load of 8 Ohms at 1 W (rms) or 4 Ohms at 1.5 W (rms). Product Description 1.12 LAN Subsystem The LAN subsystem consists of the following: • Intel 82579V Gigabit Ethernet Controller (10/100/1000 Mbits/s) • RJ-45 LAN connector with integrated status LEDs For information about Refer to Obtaining LAN software and drivers Section 1.3, page 16 1.12.1 Intel® 82579V Gigabit Ethernet Controller The Intel 82579V Gigabit Ethernet Controller supports the following features: • 10/100/1000 BASE-T IEEE 802.3 compliant • PCI Express link • Compliant to IEEE 802.3x flow control support • 802.1p and 802.1q • TCP, IP, and UDP checksum offload (for IPv4 and IPv6) • Transmit TCP segmentation • Full device driver compatibility • PCI Express power management support 1.12.2 LAN Subsystem Software LAN software and drivers are available from Intel’s World Wide Web site. For information about Refer to Obtaining LAN software and drivers Section 1.3, page 16 Intel Desktop Board DB65AL Technical Product Specification 1.12.3 RJ-45 LAN Connector with Integrated LEDs Two LEDs are built into the RJ-45 LAN connector (shown in Figure 5). Item Description A Link/Activity LED (green) B Link Speed LED (green/yellow) Figure 5. LAN Connector LED Locations Table 4 describes the LED states when the board is powered up and the LAN subsystem is operating. Table 4. LAN Connector LED States LED LED Color LED State Condition Link/Activity Green Off On Blinking LAN link is not established. LAN link is established. LAN activity is occurring. Link Speed Green/Yellow Off Green Yellow 10 Mbits/s data rate is selected or negotiated. 100 Mbits/s data rate is selected or negotiated. 1000 Mbits/s data rate is selected or negotiated. Product Description 1.13 Real-Time Clock Subsystem A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer is not plugged into a wall socket, the battery has an estimated life of three years. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to ± 13 minutes/year at 25 .C with power applied through the power supply 5V STBY rail. NOTE If the battery and AC power fail date and time values will be reset and the user will be notified during POST. When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one. Figure 1 on page 13 shows the location of the battery. Intel Desktop Board DB65AL Technical Product Specification 1.14 Thermal Monitoring Figure 6 shows the locations of the thermal sensors and fan headers. Item Description A Thermal diode, located on processor die B Processor fan header C Front chassis fan header D Rear chassis fan header Figure 6. Thermal Sensors and Fan Headers Product Description 1.15 Platform Management and Security In addition to Intel AMT the Intel DB65AL Desktop Board integrates several functions designed to manage the system and lower the total cost of ownership (TCO) of the system. These system management functions are designed to report errors, diagnose the system, and recover from system lockups without the aid of an external microcontroller. 1.15.1 Hardware Management Subsystem The hardware management features enable the board to be compatible with the Wired for Management (WfM) specification. The board has several hardware management features, including the following: • Fan monitoring and control • Thermal and voltage monitoring • Chassis intrusion detection 1.15.2 Hardware Monitoring The hardware monitoring and fan control subsystem is based on the Nuvoton W83677HG-i device, which supports the following: • Processor and system ambient temperature monitoring • Chassis fan speed monitoring • Power monitoring of +12 V, +5 V, +3.3 V, V_SM, and +VCCP • SMBus interface 1.15.2.1 Fan Monitoring Fan monitoring can be observed through the BIOS setup user interface, Intel® Desktop Utilities or third-party software. For information about Refer to The functions of the fan headers Section 1.17.2.2, page 37 1.15.2.2 Chassis Intrusion and...