From real-world engineering forums (Reddit, EEVblog, Vogons):
A typical KBC1126-NU implementation in a legacy embedded PC includes: kbc1126-nu datasheet
SMSC produced several variants. The "NU" is specific: From real-world engineering forums (Reddit
Need more technical specifics? Leave a comment or reach out to component suppliers that specialize in legacy ICs — many still offer NOS (New Old Stock) KBC1126-NU units with original datasheet bundles. kbc1126-nu datasheet