FIELD GUIDESource-led reference

Cable selection lesson

Choose a USB-C cable by the job

Choose power, data, display transport and distance independently. The same USB-C ends may support a charging task while leaving fast storage or a dock unsupported.

Applies to: Matrix reuses source-qualified baseline examples with their original check dates and adds current long-run evidence; no throughput or charging measurement.

Choose a USB-C cable by the job
TaskRequired evidenceDocumented example / remaining check
Phone or laptop chargingRequired charger/device voltage/current or PD mode and sufficient cable rating; data is a separate question.Apple's named 2m240W cable is documented for USB2 data. Cable wattage is a ceiling, not a promised device charging rate.
USB2 peripheralThe required USB2 data path and device-side power; exact device topology.USB3AAEXT10M explicitly documents USB2/1.1 fallback. Corning optical requires a powered hub for the low-speed USB1.x case and self-powered peripheral use.
Fast external storageThe drive/bridge, host/hub and cable must all document the requested USB mode; application throughput is not line rate.StarTech's named3m retimer cable documents USB10Gbps and60W. USB2/USB4/Thunderbolt link fallback remains unestablished in its inspected protocol list.
USB-C displayHost DisplayPort transport, cable/converter direction and the entire requested timing/color/HDR/DSC path.The3m retimer example has DP1.4 Alt Mode with DSC-qualified high-resolution examples. A240W mark does not supply video.
Thunderbolt dockActual Thunderbolt support at host, cable and dock; monitor/data/power paths remain separate.Apple's1.8m active TB4 example documents TB3/4 and USB4 up to40Gb/s and USB3 up to10Gb/s. These are separate ceilings, not simultaneous throughput guarantees.
Long USB runExact active/optical topology, device power, supported fallback and selected length.Use the four long-run profiles. Do not choose a universal passive cutoff; preserve product-specific power, direction and reach conflicts.

Certified marking versus installed capability

A certification mark is a product-evidence question. It does not add a missing host feature or confirm the identity of a cable in hand. Match the model/length and authenticate certification separately; no registry match or specimen inspection is claimed here.

240W USB-C Charge Cable (2 m) — product information · UCC-3M-10G-USB-CABLE official datasheet · Thunderbolt 4 (USB-C) Pro Cable (1.8 m) · Thunderbolt 5 (USB-C) Pro Cable (1 m) · Thunderbolt 5 technology brief · USB3AAEXT10M datasheet · USB 3.Optical Cables product page and FAQ · Compliance updates — Cables and Connectors

Active and passive fallback

Use the exact cable's supported-protocol list. Active optical USB, active copper USB and active Thunderbolt products can have different fallback and power behavior. Passive construction also does not grant undocumented modes. Keep the existing Thunderbolt5 source conflict attached instead of assigning its grouped headline rate to older Thunderbolt hosts.

240W USB-C Charge Cable (2 m) — product information · UCC-3M-10G-USB-CABLE official datasheet · Thunderbolt 4 (USB-C) Pro Cable (1.8 m) · Thunderbolt 5 (USB-C) Pro Cable (1 m) · Thunderbolt 5 technology brief · USB3AAEXT10M datasheet · USB 3.Optical Cables product page and FAQ · Compliance updates — Cables and Connectors

Your next useful observation

Record the exact model, selected length, both endpoint roles and required application. Keep undocumented properties unknown.

Keep these limits

  • Source-scoped examples only. No actual cable sample, link, power, qualification or certification test was performed.
Source documents, revisions and inspection methods

240W USB-C Charge Cable (2 m) — product information

Apple · Revision not recorded

Overview; Tech Specs

Inspected 2026-10-03 by public_page. AI-assisted primary-page text inspection; independent technical review pending.

The two-metre USB-C-to-USB-C cable has a 240W charging ceiling and USB 2 data capability.

Read the original source

UCC-3M-10G-USB-CABLE official datasheet

StarTech.com · Revision not recorded

Four-page PDF: overview, active retimer and e-marker description, DSC-qualified performance statement, protocol list and 60W cable-level power field; rendered pages inspected.

Inspected 2026-10-08 by public_pdf_text. AI-assisted primary-source inspection of public text and rendered PDF pages where applicable; independent review pending.

Named 3m active USB 10Gbps cable with 60W PD and DP 1.4 Alt Mode evidence.

Read the original source

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

Apple · Revision not recorded

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

Inspected 2026-10-07 by public_page. AI-assisted manufacturer-source inspection; independent technical review pending

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

Read the original source

Thunderbolt 5 (USB-C) Pro Cable (1 m)

Apple · Revision not recorded

Product overview and technical specifications: passive Thunderbolt 5 cable; represented data/display modes; charging capability; Thunderbolt marking

Inspected 2026-10-07 by public_page. AI-assisted manufacturer-source inspection; independent technical review pending

Exact Apple 1 m product only; passive construction, represented data/display modes and charging rating.

Read the original source

Thunderbolt 5 technology brief

Intel · Revision not recorded

Five-page public brief; PDF pages 2–3, feature comparison and bandwidth reconfiguration diagram inspected in rendered form.

Inspected 2026-10-08 by public_pdf_text. AI-assisted primary-source inspection of public text and rendered PDF pages where applicable; independent review pending.

Thunderbolt 5 balanced 80/80 Gbit/s and display-driven 120/40 Gbit/s modes; Thunderbolt 4 comparison.

Read the original source

USB3AAEXT10M datasheet

StarTech.com · Revision not stated; three-page PDF

pp. 1–3: overview, features, power and connector tables

Inspected 2026-10-23 by public_pdf_text. AI primary-source text inspection; not independent human review or hardware measurement

Exact 10m active USB-A extension; USB3 Gen1, USB2/1.1 fallback, included power adapter. Adapter output is not a guaranteed peripheral allocation.

Read the original source

USB 3.Optical Cables product page and FAQ

Corning · Revision not stated

Specifications and FAQ: self-powered peripherals, USB1.x hub, copper conductors

Inspected 2026-10-23 by public_page. AI primary-source text inspection; not independent human review or hardware measurement

Named USB optical series; advertised lengths and stated host/device reach differ. No 50m operating recommendation is made.

Read the original source

Compliance updates — Cables and Connectors

USB-IF · Update listing through July 2025 in returned text; IDs 147/151 and 140/143

USB-C Cable Logo Requirements and Clarification; power marking 60W/240W

Inspected 2026-10-23 by public_page. AI primary-source text inspection; not independent human review or hardware measurement

Power/data logo meaning, without reproducing protected logos or claiming authentic sample certification.

Read the original source

Source-documented education. Hardware behavior and independent human review have not been performed for these examples.

Draft a correction · More connection lessons