Wi-Fi 6E is here, sort of. Intel Wi-Fi 6E AX210 network adapter now  available, but no routers with Wi-Fi 6E yet – Techtoptu.com

With the new 802.11ax and the large bandwidth channels, the need for faster Ethernet to handle the wireless speeds. The available 6 GHz bands which more 80 MHz and 160 Mhz channels. The latest Intel AX210 2T2R wireless adapters now can reach 2974 Mhz which is far faster than standard 802.3ab 1000BASE-T Ethernet.

The problem is that 802.3an 10GBASE-T has not surfaced for desktop motherboards. PCIe cards are available but they tend to require PCIe x4 slots as they are based on older slower PCIe speeds.

The expected move to PCIe 5.0 with the next generation systems is expected to move to 10GBASE-T however USB 3.2 is fast enough for an adapter with existing systems. Unfortunately not much for options for USB at that speed.

Existing cable internet boxes are still largely 802.11ac and they only offer 1000BASE-T Ethernet ports. Hybrid fiber cable systems offer as fast as 1 gigabit speeds with DOCSIS 3.x systems. DOCSIS 4.0 provides for full duplex 10 gigabit performance.

802.11ax access points are available but existing models all come with 1000BASE-T ports. So any advantages are negated by the LAN ports.

USB 3.1 supports 10 gigabit, USB 3.2 supports 20 gigabit and USB 4.0 supports 40 gigabit bit Ethernet has been mired for 20 years since it was introduced.

May places are wired up with cat. 5 cabling which needs to be ripped out and replaced with cat 8 cabling. In cat 8 each twisted pair is shielded and then the bundle is also shielded twice to minimize electrical interference. Cat 8 can handle Ethernet at up to 802.3ba 40GBASE-T at 30 meters distant.