Many PCs from ’80s and ’90s had keyhole locks, right next to the Turbo and Reset buttons. What was it for?By NewMaxx / November 9, 2026 Direct: https://www.techspot.com/trivia/184-ibm-pcs-80s-90s-keyhole-lock-explained/?type=PatentArticle Reddit: https://www.reddit.com/r/NewMaxx/comments/1xsacwv/many_pcs_from_80s_and_90s_had_keyhole_locks_right/?utm_source=ifttt