That is a strange question 
or are you just practising posting ?
How long do they last ? Forever or until you damage it.
They are cheap, get a spare, length depends on requirement.
A more up-to-date problem is, does your computer actually have an ethernet port. There are adaptors.
or are you just practising posting ?How long do they last ? Forever or until you damage it.
They are cheap, get a spare, length depends on requirement.
A more up-to-date problem is, does your computer actually have an ethernet port. There are adaptors.