Editing Hi-Tek Series 725 fourth generation (section)

===Switch assembly===
The switch assembly consists of one or two PCBs, switches, key caps and switch plate. The switch plate is constructed of stamped steel with a thin, black finish. The ends of the plate are bent to mount to the upper case using 1 screw per side. The switches are [[Hi-Tek Series 725| Series 725]]. Two different PCB configurations are known to exist. Most examples have a single PCB with no anti-ghosting diodes. Some early models have a second small PCB which contains the controller and clips into a set of four retention tabs in the lower case shell. The main PCB on these examples has anti-ghosting diodes and supports N-key rollover.