PORT & CABLE / USB REFERENCE 27
One connector.
Separate promises.
Name the connection you need, then collect the evidence for it. A matching outline is only the beginning.
01 / A READING FRAMEWORK, NOT A CONNECTION VERDICT
Keep three columns open.
Start with your goal and the exact labels on the host, accessory and cable. Record missing evidence as unknown rather than treating one supported function as proof of another. C004A · C004K
Data
What transfers, and through which port?
Record the named USB mode for each endpoint and the cable’s data specification.
Not answered by a wattage label.
Power
Who supplies power, and what is supported?
Record the source output, cable rating, device requirement and documented negotiation conditions.
Not answered by a data-rate label.
Display
What is the documented video path?
Record the host output, display input and required transport through every cable or adapter.
Not answered by successful charging.
This layout is an editorial checklist. It does not inspect equipment, identify hidden cable electronics, calculate negotiated results or approve a connection.
02 / ANSWER THE SPECIFIC QUESTION
The distinctions worth keeping.
QUESTION 01
What does the visible connector establish?
Use the six-form comparison to name a candidate. Leave cable construction, port roles and performance unresolved until their documentation is available.
Read the source and its limits
USB Type-C names the reversible connector, not a guaranteed data rate, charging wattage or video capability. C004A
Consumer identification / documented standard or product class only
Legrand’s USB connector guide distinguishes the additional contacts in the USB 3.0 Type-A implementation from the earlier Type-A form, despite the similar outer shape. C001D
V145: Legacy and USB 3.0 Type-A identification only; not a speed, charging or universal four-contact claim.
QUESTION 02
Does a high-wattage cable mean fast data?
No. Apple’s named 2 m, 240 W cable is a concrete example with USB 2 data. The cable’s power ceiling is not a promise of the power a device will receive.
Record the charger’s supported output, the cable rating and the device requirement separately. Do not substitute the largest printed wattage for their negotiated result.
Read the source and its limits
Apple’s 240W USB-C Charge Cable page specifies a 2 m USB-C-to-USB-C cable, up to 240W charging, and USB 2 data rates. C341A
Exact Apple 2 m product; charger sold separately, and neither display support nor active/passive construction is established here.
USB-IF’s January 2026 cable guidance separates data performance from 60W/240W power markings. USB 2.0 Type-C cables can use power-only logos without a displayed data rate. C004K
USB-IF compliance-program markings; not independent authentication or video qualification.
USB Power Delivery supports negotiated power up to 240 W in compatible systems. C040A
Consumer identification / documented standard or product class only
QUESTION 03
Does charging prove that a display will work?
No. USB-IF explicitly excludes Alt Mode from the USB 2.0 Type-C cable class. Check the documented display transport as well as the cable and both endpoint ports.
A USB graphics adapter or capture stream is a different transport question from native DisplayPort Alt Mode. This reference does not certify either path for a particular setup.
Read the source and its limits
USB-IF’s March 2023 guidance says a USB 2.0 Type-C to Type-C cable can support USB Power Delivery but does not carry USB 3.2, USB4 or Alt-Mode capability. C054B
V145: USB 2.0 Type-C cable class, not every USB-C cable. Native Alt-Mode display is distinct from a separate USB graphics or capture solution; no installed display-path verdict.
DisplayPort video over USB-C requires supported Alternate Mode; the connector shape alone does not establish video output. C054A
Consumer identification / documented standard or product class only
QUESTION 04
Are matching ports on one device interchangeable?
Not necessarily. The existing Nikon Z8 reference distinguishes its data port from its Power Delivery port. Reuse that named example as a prompt to check your own device, not as a universal Type-C arrangement.
The Nikon example reuses the project’s earlier model-specific evidence; the device was not newly inspected for this release. The general lesson is to preserve the exact port role.
Read the source and its limits
Nikon lists one Type-C data connector and one Type-C Power Delivery connector on the Z 8. C004B
Nikon Z 8 body; count and named connector roles, not a general USB-C rule.
Nikon directs computer picture transfer through the Z 8 USB data connector and states that the computer will not detect the camera through its USB Power Delivery connector. C004D
Exact Z 8 computer-transfer instructions; no generic USB-C capability inference.
The Z 8 does not take operating power through its USB data connector. Power through its separate Power Delivery connector requires an inserted battery; menu setting and operating state distinguish operating power from battery charging, with EN-EL15c/b charging conditions documented separately. C004E
Z 8 setup-menu table and battery footnotes; not a universal charger, battery or simultaneous-operation qualification.
QUESTION 05
Does “backward compatible” work in both directions?
Keep the plug and receptacle direction explicit. Earlier Type-B cabling can be accepted by a USB 3.0 Type-B receptacle; the taller USB 3.0 plug does not fit the earlier receptacle. Do not force a connector to test an assumption.
Read the source and its limits
Legrand describes USB 3.0 Type-B device receptacles as accepting earlier USB 2.0/1.1 cabling; the taller USB 3.0 Type-B plug does not fit the earlier device receptacle. C002C
V145: Directional physical mating distinction, not an achieved transfer-rate or complete-system compatibility guarantee.
SuperSpeed USB Type-B adds a raised section; its plug does not fit a legacy USB 2.0 Type-B receptacle. C003A
Consumer identification / documented standard or product class only
QUESTION 06
What do a label and a revision number leave unknown?
They are different evidence. Cable labeling separates data and power; a specification listing identifies a document revision. Neither establishes every function of an installed device. A certification-program end date is not a product recall.
Read the source and its limits
USB-IF’s January 2026 cable guidance separates data performance from 60W/240W power markings. USB 2.0 Type-C cables can use power-only logos without a displayed data rate. C004K
USB-IF compliance-program markings; not independent authentication or video qualification.
USB-IF lists USB Type-C Cable and Connector Specification Release 2.5 with the date 8 April 2026. The listing alone establishes neither a product’s implementation nor its supported functions. C004L
V145: Release landing-page metadata only; the specification body and revision-by-revision technical changes were not inspected in V145.
USB-IF ended USB 3.x Micro-B and Micro-AB connector certifications after 28 February 2021. This statement concerns its certification program, not a recall or a verdict on an installed device. C007C
V145: USB-IF compliance update ID 128, connector certification scope only; no implication that existing compliant devices must be replaced.
03 / RECOGNITION TO REQUIREMENTS
Six familiar names. Different limits.
Use these existing references to separate the connector family from the implementation. No new hardware specimen studies are claimed in this release. The catalogue’s original recognition drawings remain unscaled.
USB Type-A
Keep the USB 2.0 and USB 3.0 contact implementations distinct. An outer rectangle does not establish the cable or port performance. Ordinary A-to-A leads are not a general way to join two computers.
Read the source and its limits
Legrand’s USB connector guide distinguishes the additional contacts in the USB 3.0 Type-A implementation from the earlier Type-A form, despite the similar outer shape. C001D
V145: Legacy and USB 3.0 Type-A identification only; not a speed, charging or universal four-contact claim.
C2G warns against using an ordinary A-to-A cable to connect two computers. C001B
Narrowly stated supporting distinction; not an end-to-end device guarantee
USB Type-B
The four-contact statement on this legacy record is scoped to USB 2.0. Earlier Type-B cabling may be accepted by the later USB 3.0 receptacle, but the raised USB 3.0 plug is not interchangeable in the reverse direction.
Read the source and its limits
Legrand describes USB 3.0 Type-B device receptacles as accepting earlier USB 2.0/1.1 cabling; the taller USB 3.0 Type-B plug does not fit the earlier device receptacle. C002C
V145: Directional physical mating distinction, not an achieved transfer-rate or complete-system compatibility guarantee.
USB-IF compliance guidance requires Standard B-series connectors to use exactly four contacts; this count does not establish the USB generation or peripheral capability. C002B
Standard-B contact-count engineering context only.
SuperSpeed USB Type-B
The retained nine-contact finding comes from the inherited 2019 Type-C specification mapping. That mapping is not a new physical specimen inspection. Use the exact device receptacle, not the shared Type-B name, to select a lead.
Read the source and its limits
SuperSpeed USB Type-B adds a raised section; its plug does not fit a legacy USB 2.0 Type-B receptacle. C003A
Consumer identification / documented standard or product class only
The cited USB-IF legacy mapping enumerates nine USB 3.1 Standard-B contacts, separating the four legacy USB 2.0 contacts from the added SuperSpeed transmit/receive and drain contacts. C003B
USB 3.1 Standard-B connector-side contact designation only; negotiated speed and product capability are not inferred.
USB Type-C
The same Type-C outline can appear on ports with different roles. Read the exact port label, cable data class and documented display path separately. A specification revision number is not a promise of an installed product’s functionality.
Read the source and its limits
USB Type-C names the reversible connector, not a guaranteed data rate, charging wattage or video capability. C004A
Consumer identification / documented standard or product class only
USB-IF’s January 2026 cable guidance separates data performance from 60W/240W power markings. USB 2.0 Type-C cables can use power-only logos without a displayed data rate. C004K
USB-IF compliance-program markings; not independent authentication or video qualification.
USB-IF lists USB Type-C Cable and Connector Specification Release 2.5 with the date 8 April 2026. The listing alone establishes neither a product’s implementation nor its supported functions. C004L
V145: Release landing-page metadata only; the specification body and revision-by-revision technical changes were not inspected in V145.
Micro-USB Type-B
The five-contact statement is scoped to the USB 2.0 Micro-B construction in the USB-IF compliance notice. Contact counting is not a wiring map or evidence of an installed device’s charging behavior.
Read the source and its limits
Micro-USB Type-B has a compact, low-profile form distinct from Mini-USB Type-B. C006A
Consumer identification / documented standard or product class only
USB-IF compliance guidance specifies five contacts for Micro-B connectors; the contact count does not establish charger behavior, USB generation or cable quality. C006B
Micro-B contact-count engineering context only.
SuperSpeed Micro-USB Type-B
Keep the ten-contact SuperSpeed Micro-B form distinct from the narrower USB 2.0 form. The inherited contact mapping is not a new specimen inspection; the certification end date is not a recall or replacement instruction.
Read the source and its limits
SuperSpeed Micro-USB Type-B has an extended, two-part profile distinct from legacy Micro-B. C007A
Consumer identification / documented standard or product class only
The cited USB-IF legacy mapping enumerates ten USB 3.1 Micro-B contacts, retaining the Micro-USB legacy contacts and adding SuperSpeed transmit/receive and drain contacts. C007B
USB 3.1 Micro-B connector-side contact designation only; negotiated speed and product capability are not inferred.
USB-IF ended USB 3.x Micro-B and Micro-AB connector certifications after 28 February 2021. This statement concerns its certification program, not a recall or a verdict on an installed device. C007C
V145: USB-IF compliance update ID 128, connector certification scope only; no implication that existing compliant devices must be replaced.
Legacy contact totals are source-scoped descriptions, not pin assignments or permission to probe, splice or trial-fit a connector. The older Type-C mapping used for the nine- and ten-contact references is retained evidence, not a newly inspected drawing.
SOURCE BOUNDARIES / WHAT THIS RELEASE DOES NOT CLAIM
Newer documentation is not newer hardware.
The official Type-C Release 2.5 listing is recorded as metadata only. This release does not claim to have acquired its full specification, compared every revision or verified an installed product against it. C004L
USB 80Gbps, Thunderbolt and power-path tools already exist in this workspace. They are retained rather than relabeled as newly researched features.
USB4 / USB 80Gbps reference → · Thunderbolt 5 reference → · USB Power Delivery reference →
Read the release and recovery limits
V145 is built from hash-verified surviving V144 content and a verified V143 ancestor. The supplied V144 archive was truncated. Its intact connector data, original assets and PDFs were retained; missing presentation modules were reconstructed. This is not a byte-exact recreation of the original V144 code.
Five new claims and one new source record are distinct from four repairs that reattach existing claims. Independent technical review, artwork-rights review, physical specimens and full launch approval remain open.
REFERENCE TO KEEP / LETTER + A4
Take the questions, not a guess.
A three-page reference: the separate requirements, six forms and the source ledger. Original review-edition PDF; no installation approval.
Letter reference (3 pages) ↓ (legacy download held for current evidence review). Current focused printable references · A4 reference (3 pages) ↓ (legacy download held for current evidence review). Current focused printable references