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Table 11. Front Panel Header Signal Names Pin Description In/Out Pin Description In/Out Hard Drive Activity LED Power LED 1 Hard disk LED pull-up to +5 V Out 2 Front panel LED+ Out 3 Hard disk active LED Out 4 Front panel LED- Out Reset Switch On/Off Switch 5 Ground 6 Power switch In 7 Reset switch In 8 Ground Power Not Connected 9 Power Out 10 No pin NOTE When connecting individual wires from your chassis front panel to the front panel header, be sure to observe the connection polarity. Positive wires are usually solid color and negative wires are usually white or striped. Intel Desktop Board DH67CL Product Guide Front Panel USB 2.0 Headers Figure 20, G shows the location of the front panel USB 2.0 headers and Table 12 shows their pin assignments and signal names. Table 12. USB 2.0 Header Signal Names Pin Signal Name Pin Signal Name 1 Power (+5 V) 2 Power (+5 V) 3 D4 D5 D+ 6 D+ 7 Ground 8 Ground 9 Key 10 No Connection NOTE Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device. S/PDIF Header Figure 20, H shows the location of the S/PDIF output header. Table 13 shows the pin assignments and signal names for the S/PDIF output header. Table 13. S/PDIF Header Signal Names Pin Description 1 Ground 2 S/PDIF Out 3 Key (no pin) 4 +5 VDC Installing and Replacing Desktop Board Components Connecting to the Audio System After installing the Realtek audio driver from the Intel® Express Installer DVD-ROM, the multi-channel audio feature can be enabled. Figure 21 shows the back panel audio connectors. The default connector assignments are shown in the table. Item Description A Rear surround B Center channel and LFE (subwoofer) C S/PDIF out optical D Audio line in E Mic in F Front speakers (line out) Figure 21. Back Panel Audio Connectors NOTE The back panel line out connector is designed to power either headphones or amplified speakers only. Poor audio quality may occur if passive (non-amplified) speakers are connected to this output. Intel Desktop Board DH67CL Product Guide Connecting Chassis Fan and Power Supply Cables Connecting a Chassis Fan Connect the chassis fan cable to the chassis fan header on the Desktop Board. Figure 22 shows the location of the chassis fan header. Figure 22. Location of the Chassis Fan Header Installing and Replacing Desktop Board Components Connecting Power Supply Cables CAUTION Failure to use an appropriate power supply and/or not connecting the 12 V power connector (Figure 23, A) to the Desktop Board may result in damage to the board or the system may not function properly. Figure 23 shows the location of the power connectors. The 2 x 12 pin main power connector (Figure 23, B) is backwards compatible with ATX12V power supplies with 2 x 10 connectors. NOTE If your power supply has a 2 x 10 main power connector, it is recommended that you do not install a PCI Express x16 graphics card unless it has a direct connection to the power supply. Figure 23. Connecting Power Supply Cables 1. Observe the precautions in "Before You Begin" on page 27. 2. Connect the 12 V processor core voltage power supply cable to the 2 x 2 pin connector (Figure 23, A). 3. Connect the main power supply cable to the 2 x 12 pin connector (Figure 23, B). Intel Desktop Board DH67CL Product Guide Setting the BIOS Configuration Jumper NOTE Always turn off the power and unplug the power cord from the computer before moving the jumper. Moving the jumper with the power on may result in unreliable computer operation. Figure 24 shows the location of the Desktop Board’s BIOS configuration jumper block. Figure 24. Location of the BIOS Configuration Jumper Block Installing and Replacing Desktop Board Components The three-pin BIOS jumper block enables board configuration to be done in the BIOS Setup program. Table 14 shows the jumper settings for the BIOS Setup program modes. Table 14. Jumper Settings for the BIOS Setup Program Modes Jumper Setting Mode Description Normal (default) (1-2) The BIOS uses the current configuration and passwords for booting. Configure (2-3) After the Power-On Self-Test (POST) runs, the BIOS displays the Maintenance Menu. Use this menu to clear passwords. Recovery (None) The BIOS recovers data in the event of a failed BIOS update. Clearing Passwords This procedure assumes that the board is installed in the computer and the configuration jumper block is set to normal mode. 1. Observe the precautions in "Before You Begin" on page 27. 2. Turn off all peripheral devices connected to the computer. Turn off the computer. Disconnect the computer’s power cord from the AC power source (wall outlet or power adapter). 3. Remove the computer cover. 4. Find the configuration jumper block (see Figure 24). 5. Place the jumper on pins 2-3 as shown below. Intel Desktop Board DH67CL Product Guide 6. Replace the cover, plug ...