Product Compatibility Checker — illustrative example

INPUT
Device requires USB-C power at 20 W; charger is USB-C but power output is unspecified.

RESULT
Connector appears compatible; power compatibility remains unknown until the charger's output specification is supplied.

REVIEW
Compatibility requires explicit requirements on both sides. An incomplete specification should produce an unknown result rather than a confident fit claim.

This is a teaching example, not a live execution record.