chip) are supported through the usage of I/O pin headers and add-on modules. [5] [6] (1x) The VIA PX-O add-on module supplies access to: 1 RCA -out for S/PDIF usage, 4 USB 2.0 ports, 1 Mic-in, 1 Line-out, 1 Line-in, 1 buzzer/speaker, 1 CN9 Connector (function TBC), and 1 CN10 Connector