Category 6/6a is an Ethernet cable standard that is often called Cat6/6a. Category 6a stands for Augmented Category 6. The standard supports the transmission of large amounts of data at high speeds of up to 500 MHz. This augmented rating is twice that of regular Cat6 cable. Both Cat6 and 6a cables are comprised of pairs of twisted copper wire. The 6a technology supports 10 gigabit Ethernet and has improved alien crosstalk specifications over its predecessor.