This week in 1982, Compaq announced the first true IBM PC clone — it was portable, too, as long as you were comfortable lugging 28 pounds

https://www.tomshardware.com/desktops/pc-building/this-week-in-1982-compaq-announced-the-first-true-ibm-pc-clone-it-was-a-portable-too-as-long-as-you-were-comfortable-lugging-28-pounds