I have to design a PCB board for a project where I need to add Ethernet connectivity (100Mbps) which only will be used during the setup process (it won't be connected all the time).
The problem is that where the PCB will be placed there's not space for a Ethernet RJ45 connector so the requirement is to place it off the board (the Phy driver would be on the main PCB).
So I'm planning to design a small PCB only with the differential lines and the Ethernet RJ45 connector, this PCB will be connected to the main board through standard 2.54 mm pitch pin connector strip, like this (with more pins):
Should it work fine like that, as long as I keep the track matching length on the Ethernet lines? or should I have to use another special dedicated board-to-board connector?
Thanks in advance.