Though we’ve never used their cables ... the Ethernet cable specification is policed via the honor system, allowing manufacturers to be fairly brazen about what they label as Cat 6.
Cat5 and Cat6 Ethernet cables ... many other electronic devices and Ethernet cables around. It doesn't really hurt, either, ...
CAT 6, CAT 7 and CAT 8. Ethernet connects devices in a LAN to each other and the internet. With data traveling between the wires, protocols enable each physical cable to communicate between devices.