Logitech K380 Keyboard Disassembly

I had tried to disassemble the Logitech K380 Keyboard because I wondered why the keyboard is more heavy (423g) than other similar keyboards. As you can check out its internal structure through my video, the Logitech K380 has a steel plate under the circuit board of it (from 6:00). In general, a keyboard with a steel plate provide more solid typing experience than a keyboard without it. The K380 can&avoid a fate, either. Almost all of the mobile keyboards don&have a steel plate to reduce its weight for mobility. I think the designer of the K380 had more focused on providing better typing feeling than its mobility.