After reading the install manual, I don't see any information stating that the 4x16 MBM can't be in slot 4 in the BCM450. In the 400 I know there were bus issues with doing this. Is this now not a problem in the 450? If the 4x16 was not in slot 4 and in slot one, because of it using more than a whole bus, would card slot 2 be unavailable? I know DIP switches are to be set to all on and configure the MBMs, but want to verify this won't cause any issues with the 4x16 in slot 4. With the DSM side of the card, before it will show enabled, is it correct that I will need to have a set on it? Thanks.