I have already checked with the list, it’s listed there but with a remark. However my friend also have installed the same lan card and its working on his system. he has level 4 licence and system version 2.9.38
I wanted to clear my doubt about license… IS there any such restriction that demo version can not support upgarding the hardware as well. As software upgrade is not allowed in demo.
Actually I was replacing card with a old single port card.
Solution was silly, i fistly unpluged the single port card and booted the router once, without any card, then after that i plugged my 4 port card in. It was accepted.
I think rebooting in between was the thing i was missing. !!!