Studer Part Number: A949.0427. This card offers four high - quality analog microphone/line inputs, ideal for audio setups.

To use this Studer mic/line in card, first, make sure your D21m Modular I/O System is powered off. Then, carefully insert the card into the appropriate slot in the system. After that, you can connect your microphones or line - level devices to the four analog inputs. When it comes to safety, always handle the card gently to avoid any physical damage. Keep it away from moisture and extreme temperatures. For maintenance, you can use a soft, dry cloth to clean the card periodically. If you encounter any problems, contact Studer's customer support.