This led to the development of 10BASE-T and its successors 100BASE-TX, 1000BASE-T, 10GBASE-T and 40GBASE-T, supporting speeds of 10 and 100 megabits per second, then 1, 10 and 40 gigabits per second respectively.

Ethernet over a single twisted pair, known as single-pair Ethernet (SPE), has entered commercial use. Two new