The HP 935684-001 standard control panel assembly kit is a replacement assembly for the front control panel of compatible Z-series workstations. It is listed for the HP Z4 G4, Z6 G4 and Z8 G4 systems.
This part is identified for standard, non-premium front I/O. That distinction makes it the standard front I/O version of the control panel assembly, rather than a premium configuration.
Use it when servicing a compatible workstation that requires this specific standard control panel assembly. The listing identifies the supplied item as an assembly kit; it does not specify additional contents.