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.
1 Enter a password for your router. 2  This password is needed when you want to log into the router configuration setup page. 3  Note: This is not your wireless password. 4  Select your Time Zone. 5  A summary of your wireless settings is displayed. 6  This includes your wireless network name and your wireless password. 7  Click Save.