Is there a difference between EIA/TIA 568 A and EIA/TIA 568 A/B network cable?

Question

I need to move my wireless router and modem 85 feet into another room and need to buy cable. My really OLD computer to router cable is 568 A/B, my new DSL to (really old) Modem is 568 A.

Answer 1

Both of the above answers are incorrect. The first one is on the right track. The second one is clueless.

The difference is the sequencing of the wires at the terminal connector or punchdown strip. If both ends are the same spec, it's a "straight through" cable. If the ends are different, it's a crossover cable.

568A:

White/Green
Green
White/Orange
Blue
White/Blue
Orange
White/Brown
Brown

568B:

Whti/eOrange
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown

It often does matter which one you use. Some modern switches and routers do "Auto MDX" but not all do. With an Auto MDX port you can use either straight through or crossover. If the port is not Auto MDX you must use the proper cable depending upon what you are connecting to the port.

Answer 2

it doesnt matter, the port on the router will auto sense the type of cable. any cable that you buy from walmart or radio shack will work. its more likely that you will find B type. the A type is a crossover cable design to connecto to computers together, but since your router comes with a built in switch, the switch will adjust to whatever type of connection.
email if more help needed.

Answer 3

Yes, its commonly known at cat5 and cat5e cables.. eia/tia 568a is cat5 and eia/tia685b is cat5e. u can search for more info on cat5 and cat5e cables on google as it has more info to be put into my answer.any querries mail me [e-mail]