
Keyboard front view, it's just labeled as BOSS-1 Keyboard Unit

The Keycap mount as well as the slider

The metal back has 4 rubber feet, a couple of cutouts for the internal speaker and a date code, but no product number

And to my surprise, a PCB!

Close-up of the PCB marking

Underside of the sliders, just standard flat bottoms

The domes themself, pretty average looking

Underside of the dome sheet with the conductive pads and the PCB with the weirdly-shaped contacts

Front of the PCB

And at last, the Qualitek manufacturer marking on the PCB