Addonics seems to have replaced it's 4 slot msata PCI card. Specifically it replaced model no. AD4MSPX2 with AD4MSPX2-A. http://www.addonics.com/products/ad4mspx2.php Does anyone know what the differences are, and what, if anything, is new? If it now did 4 lanes it would be worth upgrading, but I cannot see anything new (other than the new model number. Thanks for any info.