A docking cradle for a portable electronic device has a floating connector assembly which isolates a portable electronic device connected to the connector assembly from at least some of the shock, vibration or other motion imposed on the rest of the docking cradle. The connector assembly is positioned above a base frame and comprises a platform, a device interface on the platform, a device securing mechanism connected to the platform and connectable to the portable electronic device to physically secure the portable electronic device to the connector assembly; and at least one connector assembly spring connecting the connector assembly to the base frame such that the connector assembly is movable laterally relative to the base frame.