Laptop USB-C Data Port: wrong cable or connector revision. A replacement fits physically but uses different pin mapping or supported features.

The distinguishing clue

Basic power may work while data, video or sensing does not.

Checks before an assessment

List which function fails: USB data, video, dock accessories or charging. Check the model's supported port functions before treating an absent feature as a fault.

Stop point: Not every USB-C port supports charging or video, and forcing tests can confuse diagnosis.

Workshop confirmation and repair

Device-level check: Test each supported function separately with known cables and inspect both orientations of the connector.

Targeted check: Compare part numbers, pin count and supported protocol with the original. If confirmed: Install the correct revision and inspect for mismatch damage.

Repair boundary: Replace the worn connector or repair the controller path after the supported capabilities are identified.

Related cause to rule out

When power may be present while data, video or negotiation is absent, also consider Laptop USB-C Data Port: interface controller fault before choosing a repair.

Checks after the work

After repair or replacement, check both plug orientations, data, video, dock functions and sleep recovery.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.