Super card that is worth its price! performances appointment with a reading over 50 MB / s on my laptop (Sony VPC Z11 2010) which has a small SSD! I use it as a memory expansion for storing Oracle database files, it's not as fast as SD but I was amazed that it functioned as (if not more) as soon a laptop with no physical SSD hard drive. Writing is below 30 MB / s (20 to 24 MB / s) depending on the size of files and the original support (since the SSD faster than from an external drive).