Quoting from the Xsigo official announcement:

Xsigo Systems, Inc., the technology leader in data center I/O virtualization, today announced the management integration of the Xsigo VP780 I/O Director with VMware Infrastructure 3, the market-leading virtual infrastructure software suite. The solution is available immediately as a plug-in for VMware VirtualCenter 2.5, the central management console for VMware Infrastructure environments, allowing users to manage VMware virtual machines and virtual I/O resources from a single console...