VXS - an ANSI/VITA 41, VMEbus Switched Serial standard that combines parallel VMEbus with enhancements to support switched serial fabrics including PCI Express, RapidIO, StarFabric and InfiniBand over a new high speed P0 connector. Backward compatibility is maintained with existing backplanes that do not have a conflicting P0 scheme.

Combining the VME2eSST parallel bus with switch fabric technologies for multi-point, high-speed data transfers creates choices for embedded computing designs of all types. The standard also incorporates ANSI/VITA 1.7, allowing more DC power input into each board.

http://www.vita.com/vxs.html