Pros: Inexpensive Compact Decent speed Good options Supports "Legacy" drives (individual volumes) Future expandability with online expansion Breaks 2TB limit even with XP 32 bit (albeit there could be problems with some cloning type software, because this requires virtual sectors > 512B).

Cons: No latches for inserting/removing drives. If you move drives round a lot (as I have been while aggregating lots of misc drive into one big RAID), there's a lot of thumbscrewing (but not tools needed) to add and remove drives; but that's the nature of a cheap enclosure like this and a very reasonable tradeoff so no eggs off. Once you are stable, this won't happen often. Or you could skip the thumbscrews if you tape handle loops on the drives for removal and don't move the enclosure around (using connector friction to hold them in place). Speed in RAID5 has been OK but not great; but I'm using it on an older slower machine as file server, a better CPU would probably be much faster, as might RAID0 or RAID1.

Overall Review: So far RAID 5 with 4 x Samsung HD204UI on Win XP 32 bit is working well, using 4KiB logical sectors via included Highpoint software to break 2TiB limit (and match underlying Advanced Format sectors). Have 4 x 1 TB "legacy" (individual) drives in second enclosure driven by same card (Seagate & Hitachi). Tip: If you want to reuse drives from a RAID array, "Delete" the array before repartitioning/reformatting as individual drives. Email customer support was friendly and helpful.