To use this Studer card, first make sure your D21m Modular I/O System is powered off. Carefully insert the card into the appropriate slot. Connect your microphones or line - level devices to the four analog inputs. Then power on the system. When using, avoid placing the card in a dusty or humid environment. For maintenance, clean the card gently with a dry cloth every few months. If you encounter any issues, power off the system immediately and check the connections.
