Hi Scotty, when we installed the new router last week, the printer did not connect to it. When attempting to connect, it has asked me for the WEP number. Where might I find it? I discarded the box for it. Is this a problem?
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You do not need a WEP number.  WEP refers to an older type of encryption used by wireless routers.  Your network uses the more modern type of encryption called WPA or WPA2.  This password protection is simpler to use and more secure at the same time.  If your printer is asking for a WEP password, then you are most likely in the wrong area of the setup menu on the printer.  On the printer’s setup screen, in the network settings, find wireless setup wizard.  Using that tool, your printer should find your network easily.  At that point you’ll put in your wifi password and your printer can join the wifi network.  

Afterward, go to your computer and in the system preferences under print and scan settings,  delete the old printer then re add the printer.  You should be up and printing now.