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This is a Cirrus Logic AC'97 Audio controller

In addition to an AC'97 Audio controller, these ThinkPad's also have a legacy ISA soundchip with SoundBlaster compatibility for DOS applications (mainly games)
Only one sound driver should be loaded, preferably this AC'97 driver


  • Chipset: CS4297A
  • Interface: AC'97 2.1

Linux OSS driver

This sound chip is supported by the i810_audio kernel module.

Linux ALSA driver

This sound chip is supported by the snd-intel8x0 kernel module.

ThinkPad's this chip may be found in

CS4297A / CS4624 combo

CS4297A / CS4280 combo

CS4297A / CS4281 combo