RJ45 Cat 8 is the latest Ethernet cable standard, designed to support speeds of up to 40 Gbps. It is backward compatible with previous standards, such as Cat 5e and Cat 6, and is capable of supporting longer cable runs of up to 100 meters. It is also designed to reduce crosstalk and interference, making it ideal for use in high-traffic areas. The cable is constructed with four twisted pairs of copper wires, and is shielded to protect against electromagnetic interference. It is also designed to be more durable than previous standards, making it a great choice for use in industrial and commercial applications.