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2. Disconnect the monitor cable from the graphics card back panel connector. 3. Remove the screw (Figure 19, A) that secures the card’s metal bracket to the chassis back panel. 4. Push the card ejector lever down using the tip of a pencil or similar tool (Figure 19, B) in the notch. This will release the card from the connector (C). 5. Pull the card straight up to remove it. Figure 19. Removing a PCI Express x16 Graphics Card Installing and Replacing Desktop Board Components Connecting Serial ATA (SATA) Cables SATA cables support the Serial ATA protocol. Each cable can be used to connect one internal SATA drive to the Desktop Board. For correct cable function: 1. Observe the precautions in “Before You Begin” on page 27. 2. Attach one end of the SATA cable to one of the SATA connectors on the board (Figure 20, A) and attach the other end of the cable to the SATA drive (Figure 20, B). Figure 20. Connecting a Serial ATA Cable Intel Desktop Board DB65AL Product Guide Connecting to the Internal Headers Before connecting cables to any of the internal headers, observe the precautions in “Before You Begin” on page 27. Figure 21 shows the location of the internal headers and connectors on Intel Desktop Board DB65AL. Figure 21. Internal Headers Installing and Replacing Desktop Board Components Front Panel Audio Header The front panel audio header shown in Figure 21, A supports both Intel High Definition Audio and AC ’97 Audio. Table 4 shows the pin assignments and signal names for HD Audio and Table 5 shows the pin assignments and signal names for AC ’97 Audio. Table 4. Front Panel Audio Signal Names for Intel HD Audio Pin Signal Name Pin Signal Name 1 PORT 1L (Microphone) 2 GND 3 PORT 1R (Microphone) 4 PRESENCE# 5 PORT 2R (Headphone) 6 SENSE1_RETURN 7 SENSE_SEND 8 KEY (no pin) 9 PORT 2L (Headphone) 10 SENSE2_RETURN Table 5. Front Panel Audio Header Signal Names for AC ’97 Audio Pin Signal Name Pin Signal Name 1 MIC 2 AUD_GND 3 MIC_BIAS 4 AUD_GND 5 FP_OUT_R 6 FP_RETURN_R 7 AUD_5V 8 KEY (no pin) 9 FP_OUT_L 10 FP_RETURN_L Internal Mono Speaker Header The internal mono speaker header is shown in Figure 21, B. Table 6 shows the pin assignments and signal names for the internal mono speaker header. Table 6. Internal Mono Speaker Header Pin Signal Name 1 . 2 + Intel Desktop Board DB65AL Product Guide Serial Header Figure 21, C shows the location of the serial header. Table 7 shows the pin assignments and signal names for the serial header. Table 7. Serial Port Header Pin Signal Name Pin Signal Name 1 DCD (Data Carrier Detect) 2 RXD# (Receive Data) 3 TXD# (Transmit Data) 4 DTR (Data Terminal Ready) 5 Ground 6 DSR (Data Set Ready) 7 RTS (Request To Send) 8 CTS (Clear To Send) 9 RI (Ring Indicator) 10 Key (no pin) Chassis Intrusion Header Figure 21, D shows the location of the chassis intrusion header. This header can be connected to a mechanical switch on the chassis to detect if the chassis cover is removed. This switch should be in the open position when the chassis cover is installed and closed when the cover is removed. Table 8 shows the pin assignments and signal names for the chassis intrusion header. Table 8. Chassis Intrusion Header Signal Names Pin Description 1 Intruder# 2 Ground Alternate Front Panel Power LED Header Figure 21, E shows the location of the alternate front panel power LED header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header. If your chassis has a three-pin power LED cable, connect it to this header. Table 9 shows the pin assignments for the alternate front panel header. Table 9. Alternate Front Panel Power LED Header Signal Names Pin Signal Name In/Out 1 Front panel LED+ Out 2 No pin 3 Front panel LED- Out Installing and Replacing Desktop Board Components Front Panel Header Figure 21, F shows the location of the front panel header. Table 10 shows the pin assignments and signal names for the front panel header. Table 10. Front Panel Header Signal Names Pin Description In/Out Pin Description In/Out Hard Disk 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 FCFH Header Figure 21, G shows the location of the Intel FCFH header. Table 11 shows the pin assignments and signal names for the Intel FCFH header. Table 11. Intel FCFH Header Signal Names Pin Description 1 Ground 2 FCFH# Intel Desktop Board DB65AL Product Guide Front Panel USB 2.0 Headers Figure 21, H shows the location of the front panel USB 2.0 headers and Table 12 shows the pin assignments and signal names. Table 12. Front Panel USB 2.0 Headers Signal Names Pin ...