How can I connect back my printer to my Mac?

What brand of printer? How are you trying to connect to the printer? Direct connection? WiFI?

Ping printer: If you have the printers IP address open Terminal (Applications/Utilities) and at the prompt type: ping {printerIP}. You will get a reply or failure.

Printers Supported

WiFi Printer to WiFi Network - Connect

Troubleshoot Printing Issues

C45xz Said:

"How can I connect back my printer to my Mac? I need to connect my printer back to my Mac"

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What Happens when you try? Messages? More information would help.

Provide a Screenshot:

Take a screenshot on your Mac - Apple Support