Port fit and the cut edges around it
Whether plugs seat fully in every port and how the openings and their cut edges are finished.
The reading sequence
4 steps, starting at surface and finish and running to inspect the opening edges in raking light. Evidence on this point is read at E1, and 1 of the 4 steps carries a condition that ends the assessment outright.
Photograph each port empty and with a plug in it
Get one close photo per port in both states, so the gap between the plug shoulder and the shell can be read.
Evidence: E1 — one macro photo per port taken square to the opening, with the matching cable fully inserted, plus one of the same port empty
- Every port is photographed both empty and with its plug inserted.
- Photos are taken square to the opening rather than at an angle to it.
- One port is shown only with a plug in it, so the opening cannot be compared.
- A plug is inserted at an angle in the photo, hiding the gap along one side.
- Only a wide shot of the device edge is supplied, where no opening can be read.
- The ports are described in the message text rather than shown.
Read the gap at each port and rock the plug
Decide whether plugs seat to their shoulder, which is what stops a connector working loose in its socket.
Evidence: E1 — the inserted-plug photos, plus a short video of the seller rocking each plug gently from side to side
- The plug shoulder meets the shell with a gap under half a millimetre.
- No plug moves in its socket when rocked with light finger pressure.
- A gap of about 1 mm, which can come from a moulded plug body rather than from the socket.
- Slight movement in one socket that disappears when the plug is pushed home again.
- A gap of 2 mm or more remains between the shoulder and the shell.
- A plug rocks visibly in the socket, or the connection drops when the plug is touched.
Read each opening against its connector
Check whether every cut opening is centred on its connector, which is what keeps the shell edge off the plug body.
Evidence: E1 — the empty-port macro photos from step 1, with a ruler held across each opening
- Each connector sits centred in its opening, with an even reveal on both sides.
- The reveal differs by half a millimetre or less between the two sides of an opening.
- A reveal that is even on one axis and uneven by under 1 mm on the other.
- One opening cut slightly wider than its connector, with no contact between shell and plug.
- The connector touches or is covered by the shell edge on one side.
- An opening is wide enough that the connector can move sideways against the shell edge.
Inspect the opening edges in raking light
Look for a chamfer, a burr or a line of moulding flash that will cut into a cable body over months of use.
Evidence: E1 — macro photos of two openings, one lit along the edge and one lit straight on, per opening
- Opening edges carry an even chamfer or a rounded lip around the whole perimeter.
- No moulding flash sits inside any opening.
- A faint mould line that sits below the surface of the edge.
- A slight sharpness on one edge that does not catch on a fingernail.
- A raised burr stands on an opening edge.
- Flash runs into an opening, so a plug has to be forced past it.
Why the thresholds sit where they do
Ports are where a shell and an internal connector have to meet at a fixed distance, and nothing else on a device exposes that distance as plainly. The half millimetre seat tolerance is taken from measuring the same plug in the same socket five times, where the camera angle alone moved the reading by about a third of a millimetre. The 2 mm gap is the point at which a connector stops making full contact along its length rather than at its tip. A still photo cannot show whether a plug is loose, which is why step 2 pairs the measurement with a short video: the measurement describes position and the video describes play, and a socket can pass one and fail the other. The raking-light step comes last because an edge that cuts a cable is invisible in every straight-on photo supplied up to that point.
Common misreads
2 pairs recorded for this point. Each runs in both directions: 1 finding that looks worse than it is, and 1 that looks better.
- looks like Return actually Pass
A cable that stands a millimetre proud of the shell. Many moulded plug bodies are thicker than the reference cable, so the gap belongs to the cable rather than to the socket. Ask for a second cable before deciding.
- looks like Pass actually Return
A neat row of ports photographed square on with cables inserted. Square-on photos hide edge sharpness, so a burr that will cut into a cable body cannot be told apart from a chamfer at that angle.
Check this point against what you were sent
Insufficient evidence
Nothing decided on port fit and finish yet: 0 of 4 steps have been read.
0 of 4 steps judged
| Step | Reading | Evidence | Stop met |
|---|---|---|---|
| 1. Photograph each port empty and with a plug in itneeds E1 | — | ||
| 2. Read the gap at each port and rock the plugneeds E1 | A plug will not seat past a 2 mm gap and the connection drops when it is touched. The socket sits too deep behind the shell, and no change of cable reaches it. | ||
| 3. Read each opening against its connectorneeds E1 | — | ||
| 4. Inspect the opening edges in raking lightneeds E1 | — |
Sources and checks
- Public community thread — Device threads where a port seat or an opening edge was the disputed pointn=33
- Editor analysis — Half millimetre seat tolerance taken from five repeat measurements of one socketno sample
Last checked · next review due · status current.
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