UTP Cables / IEEE Ethernet Standard

Full duplex

both device can receive and send data at the same time

client to switch (check with straight through cable)

Router is the same as client/pc

switch

only receive data on pin 1,2

but cant receive data on pin 1,2

switch to switch (xxxxxxxxxxxx, cant do that with straight through cable)

router

only transmit data on pin 1,2

but cant receive data on pin 1,2

router to router (xxxxxxxxxxxxxxx, cant do that with straight through cable)

then we have the cross over cable

auto mdi -x

it auto changes the position of transmit and receive data

it is for newer version

SFP Transceiver for fiber optic cable