Arrived promptly, and installed into PCIEx4 slot with no problems.
Only minor issue, when i plugged a new unformatted 4tb drive into this card directly, it only saw it as a 2tb drive. So i swapped a couple of cables, formatted the drive to 4tb on another connection, then swapped it back to this one - and lo and behold - it now sees the full capacity (or as much as Windows lets us have, 3.725tb). Just a minor issue, but one to watch if you're using the larger drives.
Early days, but its all in and working, so can't complain.
Note, it comes with a low profile backplate if you need it, but only one Sata cable included. Drivers are on the included cd and also available on the Startech website.