An electronic device may be provided with more than one industry-standard type of AC power connector. The louvers lie next to each other in the closed position and form a flat assembly. In this process, the energy level of the ion beam produced by the acceleration voltage is set within a range from at least 1 keV to less than 20 keV. Pixel regions of the phosphor of the anode screen correspond to regions of the phosphor opposite respective electron emitters of the plurality of electron emitters. Corresponding apparatus are also disclosed. Other embodiments are described and claimed.