TheAZZA 366 MAINBOARD SERIES Page 192.5.7. CD Audio-in ConnectorConnector: CN 21Type: 4 pin un-housedThis mainboard has one CD Audio-in connector. This connector is used to connect the CDROM audio out.2.5.8. USB 3,USB 4, USB 5 and USB 6 connectorsConnector: CN 30 (USB 3)/CN 31 (USB 4)/CN 32 (USB 5)/CN 38 (USB 6)Type: 5 pin / 5 pin/ 5 pin/ 5 pinYou already have two USB ports available, USB 1 and 2 (see external connectors). Theinternal USB connectors allow you to add on an optional kit to expand the total numberof USB ports available. The 366A-AV, 366X-AS and 366X-AV have four internal USBconnectors (CN30, CN31, CN32 and CN38). This enables you to use an extra 4 USBdevices. The 366A-BV has two internal USB connectors (CN30 and CN31). This enablesyou to use an extra two USB devices. Cable for these additional connectors needs to bepurchased separately.Note: These are not the standard USB connectors you find on the ATX PC99 connector.To connect USB devices you need to use an expansion cable (purchased separately) thatends in a standard USB connector. Ask your retailer for more details.Right ChannelAudio InLeft ChannelAudio In Ground1 Left Channel Audio In2 Ground3 Ground4 Right Channel Audio InTop View of a CD Audio InConnectorFront View of a CD Audio InConnector5V DCGroundGround Data -Data +1 5V DC2 Data-3 Data+4 Ground5 GroundTop View of a USB Port Front View of a USB PortHardware Installation