If you can use something, it's useful. Useful things are handy for whatever you're doing. If something is just what you need or you just find it helpful, then it's useful. A hammer is useful in building many things. Coasters are useful if you don't want a coffee table to get stains. College degrees are useful â or necessary â for many careers.
Where is the security key on a comcast modem located? The security key on a Comcast Modem is located next to the serial  number of the unit. Sometimes the serial number is the number used  as a security code if it is not printeâ¦d on the device. (MORE) 1 person found this useful.
Where to find the router settings: The router's login password is usually on one of the Administration pages. The other settings are all found in the Wireless section of the router's setup pages, located at 192.168.1.1. Give your router a unique SSID. Don't use linksys. SSID Broadcast should be set to enabled. Retest the system, and make sure your wireless Internet connection still works. To implement wireless security, you need to do one step at a time, then verify that you can still connect your wireless computer to the router.