Hello, so currently i Have a router model HG8346R. its a very cheap router from huawei company which was provided by my ISP, they are providing me with a FTTH internet plan. but i cannot access my router from my browser, previously i could and when i contacted my ISP they said that i am not allowed to access my router (P.S it is rental,and i have to give it back to ISP after my use so maybe they are allowed to do that or not ,I Dont know) , so my question is if i am to buy my own personal router then how can i identify if it supports fiber optic cable or not i.e while checking in the internet. is there a specific model no. or name or and othere specifics that helps me to know if it supports fiber optics. currently i dont have any additional devices like ONT, its a single router and a cable is connected to it.