A dual-monitor configuration is also supported, with one monitor used for the host's graphics adapter and a second monitor used for the images provided by the ActionMedia II display adapters, but that does not allow any host text or graphics overlay. Use of the ActionMedia II Audio Video Kernel requires a minimum of 4MB of system memory. The input impedance of the headphones or speakers should be at least 600 Ohms to match the output impedance. Use of a lower impedance devices may cause a POST error and a reduction in audio quality. The audio device must have an input impedance level of approximately 10 KOhms or greater.
Headphones are generally low-impedance devices.
To use headphones, plug them into an audio amplifier rather than directly into the Delivery Board socket. A cable is not supplied with the option. Any other cable connection may cause the adapter to malfunction and cause damage to its internal components. Low LINE level output of 2.0 Vp-p. MIC output of 60 mVp-p. maximum.