A2. The Data Center Blade enclosure has only one row of connectors across the top of the midplane as seen from the Blade side. The Enterprise Enclosure has a row of connectors across the top and another across the bottom. Remove a blade and look to see if there are one (Data Center) or two (Enterprise) rows of connectors across the midplane. Refer to the photograph of the different Blade enclosures on the Supermicro website for more detail. http://www.supermicro.com/servers/blade/enclosure/