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wiring - Can an ethernet cable look OK to a cheap cable tester but still have a problem? - Home Improvement Stack Exchange
Ethernet cable tester often shows cable 5 light as off. Is this normal? The cables often work with no issues. - Quora
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Really Good Read On Ethernet Cable Quality (Spoiler: Your Cat6 Cable May Not Even Be Cat5e Compliant) : r/homelab
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Amazon.com: RJ45 Cable Tester - Network Cable Tester for LAN Phone RJ45 RJ11 RJ12 Cat5 Cat5e Cat6 Cat6a Cat7 Ethernet Cable Tester - Automatic Operation, Remote Testing - Durable and Sturdy : Electronics
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