1. Start with primary manufacturer evidence
We start with product specifications, platform documents, manuals and manufacturer configuration tables. A processor page, retailer filter or third-party roundup cannot prove which Thunderbolt version the laptop actually uses.
2. Separate family facts from exact configuration facts
A family page can describe the chassis, display range and general port rule. A purchase card must be more precise: one retail SKU or order code with one CPU, GPU, memory capacity and storage capacity. Machine types and family codes stay in the evidence tracker until we can document a complete retail configuration.
3. Check lookalikes and regional variants
We compare release years, processors, GPU tiers and regional identifiers when the same model name covers different ports. A version is labeled TB4 or USB4 only when the source supports that protocol; otherwise the conservative warning is simply “Not TB5.”
4. Match retail listings exactly
An Amazon ASIN is attached only when the listing identifies the same model number, CPU, GPU, memory and storage. Search results are leads, not proof. When no exact Amazon listing exists, the catalog uses a verified manufacturer or retailer source rather than a broad family search link.
5. Date the evidence and revisit gaps
Every catalog claim retains a source region and check date. Exact US configurations without an Amazon match are reviewed again on a rolling schedule because retailer inventory changes. Significant catalog changes update the affected family guide and sitemap date.
What a verified status does not mean
Verification confirms the documented Thunderbolt version and port count. It does not mean we tested performance ourselves. It also does not guarantee eGPU support on every operating system or that USB-C charging can replace a gaming laptop's full-power adapter.
Browse the complete exact-configuration catalog or read the corrections policy to report evidence that should be reviewed.