If you have lost the setup CD for your Linksys Wi-Fi router or in case your computer does not have a CD drive, you can learn how to install Linksys router without cd with according to the Linksys Support Site and downloading the Linksys Connect Setup Software. To perform this task, you have to connect your computer to a network with an active Internet connection. You can also connect it straight to the modem. You also have the facility of manually installing your Linksys Wi-Fi router. NOTE: Some of the Linksys routers might not be compatible with the Linksys Connect Setup Software. In case you wish to download the driver or firmware for your Linksys device, you can search for its product page on the Linksys Support Site.