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 On Netgear routers, type admin for the username and password for the password. 2  On other routers, try leaving the username empty and entering admin for the password. 3  You can visit sites such as RouterPasswords.com and enter in your routerâs model to find the default password. If you find your router has a default password, be sure to set a new one. 2  A default password is a security risk. 3  If you forward every port (not just those that your game uses) or bypass your router, do not turn off your computer's desktop firewall. 4  Microsoft introduced the firewall in Windows XP SP2 for a good reason.