Thunderbolt · Exact Product Example

Thunderbolt 4 active USB-C cable example

An exact manufacturer example shows that a USB-C-ended Thunderbolt 4 cable can use active construction and carry a documented set of data, display and charging capabilities.

USB Type-Cend A

USB Type-Cend B

Bidirectionaldirection evidence

Activeconversion

Endpoint map

Start with what is physically represented

Exact manufacturer cable; host/device roles depend on setup.

USB Type-C reference →USB Type-C reference →Compare references with these ends →Canonical cable/adapter note →

Beyond the connector shape

Four evidence boundaries

Exact manufacturer example; match the named product and length.

Electronic marker not established

Not established

The inspected Apple product page does not identify the electronic marker separately.

Fallback / protocol scope documented

Thunderbolt 3/4, USB4 and USB3

Apple lists up to 40 Gb/s for Thunderbolt 3/4 and USB4, and up to 10 Gb/s for USB3. USB2 fallback is not separately established here.

C316B

Whole-cable certification check not established

Not established

No exact whole-cable certification registry match or authentic-sample inspection was performed.

Bandwidth and task scope documented

Protocol-specific ceilings, not throughput

The named 1.8 m active cable also lists HBR3 and up to 100W. These independent claims are not a simultaneous-maxima guarantee.

C316B · C316C

Evidence notes, not a verdict. No electronic interrogation, physical authentication, whole-cable certification approval or throughput calculation is performed. Read power and data markings →

Capability ledger

Six questions kept separate

DataDocumented

Exact product has documented Thunderbolt/USB data modes.

Evidence: C316A

Power / chargingDocumented

Exact product has a documented charging capability.

Evidence: C316A

VideoDocumented

Exact product has documented display transport support.

Evidence: C316A

ConversionActive

Manufacturer identifies the exact 1.8 m product as active.

Evidence: C316A

Length / reachDocumented

Exact represented product length is 1.8 m.

Evidence: C316A

Markings / certificationDocumented

Exact product uses Thunderbolt branding/marking.

Evidence: C316A

Explicit unknowns

Capabilities do not transfer to other USB-C-ended cables.

Source boundary

Why this profile says what it says

Back to first citation ↑

Source records: S374

C316ASource checked · pending review

Apple documents its 1.8 m Thunderbolt 4 Pro Cable as an active USB-C-ended Thunderbolt cable supporting represented Thunderbolt/USB/display modes and charging; those capabilities belong to this exact product, not to USB-C shape generally.

Scope: Exact Apple 1.8 m Thunderbolt 4 Pro Cable only. · review due 2027-01-05

Back to first citation ↑

Source records: S374

C316BSource checked · pending review

Apple’s Thunderbolt 4 Pro Cable 1.8 m overview lists Thunderbolt 3/4 and USB4 up to 40 Gb/s, USB3 up to 10 Gb/s, DisplayPort HBR3 and charging up to 100W.

Scope: Exact named Apple 1.8 m product, manufacturer ceilings rather than guaranteed end-to-end rates or simultaneous maxima. · review due 2027-01-06

Back to first citation ↑

Source records: S374

C316CSource checked · pending review

Apple explicitly labels the Thunderbolt 4 Pro Cable 1.8 m as active. Its stated construction and length do not establish the construction or reach of another USB-C-ended cable.

Scope: Exact 1.8 m product. Electronic-marker details and a whole-cable certification registry match are not established by this inspection. · review due 2027-01-06

Apple · Thunderbolt 4 (USB-C) Pro Cable (1.8 m)

Exact Apple 1.8 m product only; active/passive construction, represented data/display modes and charging rating.

Open source ↗

Product overview and technical specifications: active Thunderbolt 4 cable; data/display modes; charging capability; Thunderbolt marking · Exact-product evidence does not establish capabilities for visually similar USB-C or Thunderbolt cables.

Common questions

Questions this record can help resolve

Does USB-C mean USB 3, USB4 or Thunderbolt?Separate the USB-C connector shape from the USB generation, USB4, Thunderbolt, video and charging capabilities implemented by a particular port or cable.Why does a USB-C cable charge but not carry a display?Treat charging and display transport as separate capabilities instead of assuming one successful USB-C function proves every other function.Why can two USB-C cables support different speeds?Use USB-C only as an endpoint description; data generation, Thunderbolt support, construction, length and exact-product capability remain separate.Are all USB-C cables the same for charging?Keep the connector form separate from cable-specific charging/current evidence and the exact devices participating in power negotiation.

Evidence behind this page

Scope first. Source second. Approval separate.

1 linked sources · 3 scoped claims · 0 sources with inspection/access flags.

Page scope: exact-product-example

Assessment 2026-10-22 · earliest scheduled source review 2027-01-05. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 1 source scopes, access limits and dates

S374 · Thunderbolt 4 (USB-C) Pro Cable (1.8 m)

Apple · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05

Within inspection window

Scoped support: Exact Apple 1.8 m product only; active/passive construction, represented data/display modes and charging rating.

Not established / limitations: Exact-product evidence does not establish capabilities for visually similar USB-C or Thunderbolt cables.

Locator: Product overview and technical specifications: active Thunderbolt 4 cable; data/display modes; charging capability; Thunderbolt marking

Trace 3 claims to their source records

C316A · P316

Claim scope: Exact Apple 1.8 m Thunderbolt 4 Pro Cable only.

Source links: S374 · Evidence trail → (private workspace)

C316B · P316

Apple’s Thunderbolt 4 Pro Cable 1.8 m overview lists Thunderbolt 3/4 and USB4 up to 40 Gb/s, USB3 up to 10 Gb/s, DisplayPort HBR3 and charging up to 100W.

Claim scope: Exact named Apple 1.8 m product, manufacturer ceilings rather than guaranteed end-to-end rates or simultaneous maxima.

Source links: S374 · Evidence trail → (private workspace)

C316C · P316

Apple explicitly labels the Thunderbolt 4 Pro Cable 1.8 m as active. Its stated construction and length do not establish the construction or reach of another USB-C-ended cable.

Claim scope: Exact 1.8 m product. Electronic-marker details and a whole-cable certification registry match are not established by this inspection.

Source links: S374 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.