In the past few years, Cat-6 has become increasingly popular compared to Cat-5E. While they are both 4 pairs of 24-gauge that are wrapped in shielding of the Cat-6. They are more tightly wound and let transmission happen faster. For security cameras, it is recommended to use Cat-5e as it is not necessary to transmit more than 1,000Mbps, even in 4K resolution. Cat-6 is mainly intended to be the backbone for large network infrastructures that transmit several gigabytes of data per second.