The Class FA therefore does not support 40G Ethernet .
However , in 2016 , the IEEE 802.3 bq working group ratified the amendment 3 which defines 25Gbase - T and 40gbase - T on Category 8 cabling specified to 2000 MHz .
The Class FA does not support 40G Ethernet .
However , in 2016 , the IEEE 802.3 bq working group ratified the amendment 3 which defines 25Gbase - T and 40gbase - T on Category 8 cabling specified to 2000 MHz .