I am aware of the RJ-45 to DB9 adapter commonly used on cisco routers to access console. I am aware of the USB to DB9 adapters to allow laptops without serial to get a serial port. I am looking for a USB to RJ-45 adapter so I don't have to chain two adapters together. I have searched everywhere but even the pre-packaged solutions seem to have the two adapters chained together. Does such a thing exist? If it doesn't is there some technical reason it cannot? It seems like a manufacturer would just have to wire the DB9 end of the USB adapter differently and it would work just fine plugged straight into the console port of the router.
Cisco – Does a USB to RJ-45 console cable exist
adapterciscoserial
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Best Answer
I haven't seen one. It would have limited usefulness as Juniper, Cisco, Linksys, APC, HP Procurves, our Raritan power strips, etc all use different cables -- and some use different baud rates.
We've got a box of cables in our cage labelled with the baudrate/connection protocol and devices that it works with.
It is technically possible. I don't see it as being a big seller though.