To put it simple, the twisted pair specifications: Cat6 (Class E), Cat6a (Class EA), and Cat7 (Class F) all support 10GBASE-T applications with differentiated performances.
Check the below chart to get a full understanding of the specifications and typical applications of Cat6 vs Cat6a vs Cat7.
ALL backward compatible – you can plug a newer twisted pair cable into a device that is designed for a slower cable.
The fastest Ethernet cable yet is Cat8, which can support data rate up to 40Gbps, four times of Cat6a cable. If you are looking for high-speed data center and server room cabling, check out Cat8 Cable for 25GBASE-T and 40GBASE-T Network.
The minimum grade of cabling to be deployed in a 10GBASE-T network should be Cat6a cable.
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