Copper cable and Fibre standard: SFP ... QSPF28

https://en.wikipedia.org/wiki/IEEE_802.3

Copper:

10/100M

1G

25G

40G

100G

Fibre

https://en.wikipedia.org/wiki/QSFP

4 x 1 Gbit/s QSFP 

4 x 10 Gbit/s QSFP+

4 x 14 Gbit/s QSFP+ (QSFP14)

4 x 28 Gbit/s QSFP+ (QSFP28)      used for 100G or 4x 25G