The original ethernet cable was canonically '1968 Corvette yellow' to distinguish it from a power cable—because you literally had to drill into it to install it
The original Ethernet cables were a distinct '1968 Corvette yellow' for two main reasons: creator Rich Seifert's personal preference and a practical safety measure. This bright color helped distinguish them from power cables, preventing accidental drilling into dangerous wires during installation, a process that involved physically tapping into bulkier coaxial cables.
PC Gamer
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