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Not all routers support a USB connection. Most high-end routers offer USB functionality. If your router does not support USB functionality, you will need to purchase a print server to connect your printer to a network. If your router has a USB port, you can easily connect your printer to the router using the USB port. If you haven't already done so, plug the printer into an electrical outlet or power strip. Turn on the printer and wait 60 seconds for your router to recognize the printer. To enable print sharing on your router, open a web browser and type the router's IP address in the address bar (it's usually 192.168.0.1, 192.168.1.1, or 10.0.0.1, or something similar). Then log in to your router. This takes you to the router's firmware settings screen. Look for the USB menu and enable USB printer support or Printer Server mode and then save your settings. Each router has a different firmware settings screen and login method. Consult the user's manual or technical support for your particular router to learn how to log in and enable Print sharing. Some routers may not support Print sharing. If you cannot locate print sharing, you may need to purchase an external print server. The Apple icon opens the Apple Menu. It's in the menu bar at the top of the screen. It's the second option in the Apple Menu. This opens the System Preferences screen. It's the icon that resembles a printer. It's below the box with the list of printers to the right of the "Printers & Scanners" window. It's the icon below a blue globe at the top of the window. The Address bar is the first line in the window. Use the same IP address you use to log in to your printer. The "Protocol" drop-down menu is below the address bar. Use the drop-down to select "Line Printer Daemon". Use the drop-down menu next to "Use" to select "Select Software". This displays a list of available printer software. Type your printer's brand name in the search bar that says "Filter". Then select your printer's model number in the list and click "Ok". It's in the lower-right corner of the "Add" window. This installs the Printer driver and allows you to add the printer so you can print wirelessly using your router. Repeat steps 5 -14 on any Mac computer on your network you wish to have access to your printer.
Locate a USB port on your router. Connect the printer to the USB port on your router. Power on the printer and wait 60 seconds. Enable print sharing on your router. Click the Apple  icon. Click System Preferences. Click the Printers & Scanners icon. Click + to add a printer. Click the IP tab. Type the router's IP address next to "Address". Select "Line Printer Daemon" next to "Protocol". Select "Select Software" next to "Use". Select your printer's make and model and then click Ok. Click Add.