Results are diagnostic signals, not a manufacturer certification or repair diagnosis.
Rollover is combination-specific
A keyboard can register many keys in one region but fail a particular matrix combination elsewhere. Test the combinations you actually use.
Chatter looks like unintended repetition
One physical press that repeatedly produces down/up cycles may indicate switch bounce, firmware, wireless loss, accessibility settings, or software repeat. Cross-test before blaming hardware.
Reserved shortcuts are weak evidence
The browser or operating system may consume function keys, media keys, security shortcuts, and navigation combinations before the page sees them.
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WORKFLOWS