The Creatix 20 AC97 Modem is a type of analog modem that uses the AC97 (Audio Codec '97) interface. The AC97 standard was primarily designed for audio codecs and has been used in various audio and modem devices, but the Creatix 20 AC97 Modem specifically refers to a modem device that uses this interface for communication.

The modem itself allows for dial-up networking, often used in older systems for Internet connections over a telephone line. While dial-up modems are largely obsolete today, some systems, particularly older PCs or embedded devices, may still use them. The AC97 interface allows the modem to communicate with the system's audio and system buses.