The Category 6a, or Cat6A plenum cable
is the latest iteration of Gigabit Ethernet cabling. The a stands for augmented and is a nod to Cat6a Plenum improved specifications compared with its predecessor, the Category 6, or Cat6 plenum.

The Cat6A doubles data transmission bandwidth, from 250 to 500 MHz; decreases the chance of crosstalk interference; and provides superior reliability and transmission speeds through greater lengths of cable. Unlike most Cat6 cables, Cat6a cables ...