41 Chapter 1 Product Information9. Optical drive audio connector (4-pin CD)These connectors allow you to receive stereo audio input from soundsources such as a CD-ROM, TV tuner, or MPEG card.Figure 1.17: Internal Audio Connector10. CPU, chassis, and power fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN, 3-pin CHA_FAN2, 3-pin PWR_FAN)The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 Wmax.) or a total of 1 A ~ 7 A (84 W max.) at +12V. Connect the fancables to the fan connectors on the motherboard, making sure that theblack wire of each cable matches the ground pin of the connector.Figure 1.18: Fan connectorsNote: Do not forget to connect the fan cables to the fan connec-tors. Insufficient air flow inside the system may damage themotherboard components. These are not jumpers! Do notplace jumper caps on the fan connectors!RCD(black)Right Audio ChannelLeft Audio ChannelGroundGroundRGNDCPU FAN PWRCPU FAN INCPU FAN PWM GNDRotation+12VGNDRotation+12VPWR_FANCHA_FAN2GNDRotation+12VCHA_FANCPU_FANCHA_FAN2CPU_FANPWR_FANCHA_FAN
