Ethernet Connectors

2023-11-21 · 2 min read
Connector
Wires
Speed
Notes
RJ45 4 twisted-pairs
  • 0.1 Gbit/s for Cat 4 cable.
  • 1 Gbit/s for Cat 5 cable.
  • 2.5 Gbit/s for Cat 6 cable.
  • 10 Gbit/s for Cat 7 cable.
  • 40 Gbit/s for Cat 8 cable.
It does not matter if a cable is terminated in a T568A or T568B order, as long as both ends of the cable follow the same standard. These considerations were more important when designers needed to consider crossover cables, and what device was upstream. Crossover cables are not required anymore, since all modern computers, switches, and routers perform this crossover through hardware on their circuit boards.

M8, A-coded 2 twisted-pairs
  • 0.1 Gbit/s
M8, D-codeed 2 twisted-pairs
  • 0.1 Gbit/s
M12, D-coded 2 twisted-pairs
  • 0.1 Gbit/s
M12, X-coded 4 twisted-pairs
  • 10 Gbit/s
MIL-DTL-38999,
23-09 arrangement
4 twisted-pairs
  • 1 Gbit/s
MIL-DTL-38999,
RJ45 insert, (called an RJF or RJFTV connector)
4 twisted-pairs
  • 1 Gbit/s