serial cable extension
I don't know why this doesn't work.
I want to extend my mouse about 20 feet over a serial connection so I bought 1 male and 1 female db 9 to RJ 45 connectors and wired them straight through omitting pin #9.
I connected them together using a standard cat 5 store bought cable (tried 3 different ones) but the mouse is not recognized with the extension.
I ohmed them out to make sure of connectivity.
I even tried connecting the two metal db9 plug casings together with a clip lead thinking that this might be a needed ground,
It works fine with no extension. What am I missing?
(Kensington expert serial mouse)