Asus P8HM LX PLUS R Manual Online: Usb Configuration, Onboard The following two items appear only when you set the HD Audio Controller item to. *Use a chassis with HD audio module in the front panel to support Thank you for buying an ASUS® P8HM LX R Series motherboard! Model P8HM LX PLUS R Audio. Audio Codec. Realtek ALC Compliant Standards. High Definition Audio High Definition Audio (8-channel).