10GBase Ethernet is the most recent and fastest of the Ethernet standards. It's intended to connect servers or switches over short distances, up to 50 feet, using coaxial cable. It gets its name because it is intended to run over CX4, or 4 pairs of twinaxial copper wiring. It has a nominal data rate of 10Gbit/sec, 10 times as fast as gigabit Ethernet. It is also referred to as 802.3ak.