For information they were tested & recognized on two different Windows 7 OS and VMWare ESXi 5.0 server.
On Windows, in the "Performance Index" from "Control Panel"> "System" going from a score of 4.7 to 7 (Original 2GB to 8GB with the two strips).
For increased performance without ruining the microserveurs HP proliant (especially without changing BIOS) it's just perfect!