Cat7 Ethernet cables sold on Amazon are largely counterfeit because Cat7 was never ratified by the TIA (Telecommunications Industry Association), making it easy for manufacturers to sell non-compliant cables. True Cat7 requires GG45 or TERA connectors and proper S/FTP shielding grounded to a metal chassis — conditions almost no consumer gear meets. Plugging an ungrounded shielded cable into a standard plastic router port turns the foil into an antenna that collects interference. Cat6a (Category 6 Augmented) is the TIA-recognized standard for 10Gbps over 100m using standard RJ45 connectors, is thinner, more flexible, and avoids grounding issues entirely. To diagnose cable problems, iPerf3 can be run between two local machines to detect erratic throughput or speed drops. The recommendation is to replace cheap Cat7 cables with certified Cat6a UTP cables from reputable suppliers.

5m read timeFrom xda-developers.com
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