Task-first reference

Identify an internal PC connector

Compare PC power, storage and internal USB forms without treating similar counts as interchangeability.

Recommended reference sequence

1. PC power familyStart with the broadest evidence layer.2. Storage familyContinue only as the question becomes more specific.3. USB family terminologyContinue only as the question becomes more specific.4. Internal connector comparisonsContinue only as the question becomes more specific.

Stop line.

Internal connectors can share size, pitch or contact-count cues while carrying different roles. Those cues do not establish interchangeability; use keyed form and exact documentation.

Discovery is not a compatibility verdict.

These discovery surfaces route and reorganize facts already represented in the atlas. They do not add electrical ratings, universal pinouts, measured tolerances, exact-device support, wiring approval or an end-to-end compatibility result.