Hello Don, > Hmmm... no answer means: It means you ask too many simple questions :) If you will try to answer them before posting, you will learn much more quick. MSVAD is an EXAMPLE only. It is not an accurate and strongly verified driver. And it is changed from time to time but is not revised every time to avoid any collision. The diagram simply was not updated after a topology change. Regards, Eugene ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/