Anthony Calabrese :
i have no clue what this means came someone please tell me!
Those are the possible signalling standards that the NIC on your computer can negotiate with the NIC at the other end of the cable (commonly a switch).
The proper names for these standards are:
10BASE-T AKA 802.3i standardized in 1990, requires two twisted pairs and allows for maximum transmission rates of 10 megabits per second
100BASE-TX AKA 802.3u standardized in 1995, requires two twisted pairs and allows for maximum transmission rates of 100 megabits per second in each direction (from your PC to the switch, and vice versa)
1000BASE-T AKA 802.3ab standardized in 1999, requires four twisted pairs and allows for maximum transmission rates of 1,000 megabits per second (one gigabit) in each direction.
Absent from your NIC is 10GBASE-T AKA 802.3an standardized in 2006, requires four twisted pairs and allows for maximum transmission rates of 10,000 megabits per second (ten gigabits) in each direction.
You may notice that Ethernet standards follow a similar trend to Wireless standards. Just like how Wireless NICs are often marketed as A/B/G/N/AC, Ethernet NICs can be marketed as I/U/AB/AN, but are far more commonly marketed as 10/100/1000/10G or 10/100/1000/10,000