This driver supports all ALC series audio chipsets from ALC101 up to ALC861. It is used as onboard sound on many motherboards. Chips covered include ALC101 /201/ 202/ 203/ 250/ 650/ 653/ 655/ 658/ 861.It is highly recommended to always use the most recent driver variant available.Do not forget to check with our site as often as possible in order to stay updated on the latest variant.Try to set a system restore point before installing a device driver. This will help if you installed a wrong driver. Problems can arise when your hardware device is too old or not supported any longer.