Audio Subsystems

NOTE! All ThinkPads manufactured since the year 2000, have AC'97 or more recently HD Audio controllers. Those controllers are paired with a simple codec chip which are listed below. If you have Audio problems with such a ThinkPad they are most likely due to problems with the codec support, not the AC'97 or HD Audio controller itself. * Wikipedia article on AC'97 * Wikipedia article on HD Audio

Analog Devices AD1881A AD1981B AD1981HD AD1984 Conexant CX20549 CX20561 CX20582 CX20585	Cirrus Logic CS4231 CS4236 CS4237 CS4239 CS4248 CS4297 CS4299 CS4280 CS4281 CS4610 CS4624
ESS Technology ES488 ES688 ES1688 ES1946	IBM MWave MDSP2780 Neomagic NMA2
Realtek ALC200 ALC269Q	Yamaha YMF715