In most cases, yes! A lot of ISPs provide a combination modem and router, and most of them are terrible black boxes to which you have no access. Talk to your ISP to find out if you can connect your own router, and find out if you can swap your modem/router combo for just a modem, as this can sometimes save you money, thanks to a lower monthly fee. Additionally, you may even be able to buy your own modem to save even further on “equipment rental” fees, though you’ll want to do your research before you do that.