This is the first of three downloads for the 33.6 modem-sound card that is especially used in some Packard Bell computers. It has an Aztech AZT2320 Chip on it and a Rockwell RCV336ACF/SP chip on it. This will install it but you need all three downloads. I will try now to upload the other ones.They willbe 142649-2 and 12649-3. Have not tried it on other OS's.