Soundcraft 5100265-00 Local Rack Upgrade KitThe vi400 600 control module is designed to directly replace the vi4 6 silver box control module and provide a faster processor, more reliable performance with hard soldered displaylink based graphics outputs rather than the pci graphics card of the original system. the new module runs a variant of v6. x software, but with a cut down feature set compared to vi000 series consoles, appropriate to the capabilities of the vi2 4 6 surface and local rack. a