Choc Switch On Laptop

PG1350, also called Kailh Chocolate Switch or Kailh Choc Switch is a series of low-profile metal contact switches from Kailh.The keycap mount is inspired by Kailh switch but the two types are not compatible.

Likely due to the size, the switch contacts are not the scaled-down Cherry-style contacts as found in SteelSeries QS1;
the movable contact instead uses lateral movement. As the size prohibits the use of a click collar, a "click bar" is used instead, which is a rod spring that is pushed aside in a manner similar to that of a click leaf.