Alps switches are interesting in that they are no longer officially produced, but clones exist. Hua-Jie, Kwanda, Tai-Hao, Xiang Min, Gaote, and some unknown manufacturers have all produced or continue to produce Alps clones. Alps switches function similar to Cherry MX/Kailh switches in terms of how they actuate, but one difference is that Alps switches use a metal leaf as the contact mechanism.
Alps switches use a rectangular mounting stem, which makes it nearly impossible to find replacement keycaps. Another reason why finding replacement keycaps is nearly impossible is that alps switches are rarely used in keyboards today, so demand is significantly lower than other mechanical switches. Alp switches come in linear, clicky, and tactile variants.
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