what is the difference between 568a & 568b wiring?

[dad1978]

i am connecting a new ce tech ethernet wall mount to a new cat 5e wire. just want to be able to do it right i am getting high speed internet soon and need this to be done before they bring the modem/router to my home.

 

[JackNaylorPE]

1 letter

Actually just the color scheme .... use either one just don't mix.

Both are appropriate for high speed data, though 568B is somewhat more common for installed wiring and 568A is more common in jumpers. There is no performance advantage either way. The only real difference between the two is the order in which the pairs are used (orange and green).

EIA/TIA-568A:
Pin 1: White/Green
Pin 2: Green/White (or just plain Green)
Pin 3: White/Orange
Pin 4: Blue/White (or just plain Blue)
Pin 5: White/Blue
Pin 6: Orange/White (or just plain Orange)
Pin 7: White/Brown
Pin 8: Brown/White (or just plain Brown)

EIA/TIA-568B:
Pin 1: White/Orange
Pin 2: Orange/White (or just plain Orange)
Pin 3: White/Green
Pin 4: Blue/White (or just plain Blue)
Pin 5: White/Blue
Pin 6: Green/White (or just plain Green)
Pin 7: White/Brown
Pin 8: Brown/White (or just plain Brown)

 

[TysonWhite1]

There is no difference between the two wiring schemes in connectivity or performance when connected form one device to another, so long as the devices are wired for the same scheme.