THIS IS USED ON THE TYPE 4 COMPUTERS
ALONG WITH TWO RED ONES.
This push button canopy switch features a black color actuator and is available in a circuit arrangement of SPST. The low-profile push button design makes it great for replacing damaged or worn switches on household appliances, such as lighting fixtures.
These have become extreemly rare these days.
Nickel (Nut & Plastic Knob); SPST
Circuit Arrangement: ON-OFF; Rated: 6A/125V AC, 3A/250V AC
Recommended mounting hole: 13/32" diameter