My question is pretty simple at the moment i use a 1882ix-24 connected by 8088 to a HP SAS expander (so connected external to a seperate case). They is a RAID6 and a RAID5 array created combined of disks all connected to the HP SAS expander. Since the SAS expander is only able to do SATA300 this way the 1882 is a waste of power. I also have got a couple 1680 cards. Plus i have a new goal for the 1882 I know it is possible to upgrade an areca card and keep the array, but is it also possible to keep the RAID arrays while DOWNGRADING from a 1882ix to an 1680 ? Both have got an 8088 external port so physically i don't see a problem Does anyone see any other problems?