리얼텍 High Definition Audio System Software v2.21 driver 지원 os : win2000/2003/XP [변경사항] 1. Customizations. 2. Support ALC275. [지원하는 칩셋] ALC882, ALC883, ALC885, ALC888, ALC889, ALC861VD ALC660, ALC662, ALC663, ALC665, ALC260, ALC262,ALC267, ALC268, ALC269 ALC272, ALC273,2. ALC275. ALC887