Printers

Setting up a point-of-sale (POS) printer for receipt printing can vary depending on the type of connection available (USB, Bluetooth, or network). Here's a general guide on how to set up a POS printer for receipt printing using each connection method:

USB Connection

Connect the POS printer to your POS Mac using a USB cable and ensure that the printer is powered on and ready.
When shared correctly, local USB printers will also appear available for selection in the network section of the app using the IPP protocol.

You can manually add the printer through the printer settings. Ensure you are using either the computer name, "localhost" or the "127.0.0.1" local IP address reference in the host attribute. IPP printers use port number 631.

Bluetooth Connection

Enable Bluetooth on both your device's general settings and the POS printer.
Pair the POS printer using the Bluetooth printer settings within the app.

Network Connection

Connect the POS printer to your network using an Ethernet cable or configure it to connect wirelessly to your Wi-Fi network.
Obtain the IP address of the POS printer from the printer settings or by printing a network configuration report.
You can add the POS printer to your network printer list by entering its IP address in the app's printer settings.

Share your printer

To share your printer with another Mac or a UNIX computer, both devices must be on the same local network as your Mac. Also, Mac users must be using OS X 10.4 or later for printer sharing to work.

Note that printer sharing is intended for non-network or non-wireless printers that are usually directly connected to your computer. If your printer is already network, wireless, or AirPrint compatible, you don't need to share it, as it is already shared on your network.

To share your printer on a Mac, first, click on the Apple menu, then click on System Preferences. Next, click on General in the sidebar, and select Sharing on the right side of the window.

Once the Sharing window appears, turn on Printer Sharing, and click on the Info button on the right. Below Printers, choose the printer you want to share.

Now, you can choose who can use the printer. To let everyone use the printer, click the pop-up menu next to Everyone, and select Can Print. If you want to choose specific users who can use the printer, click the Add button at the bottom of the Users list, and select the users you want.

Finally, click Done to save any changes you made. To remove a user, select the name, then click the Remove button. Note that you can't remove Everyone.

For more information, you can refer to this link: https://support.apple.com/guide/mac-help/share-your-printer-on-mac-mchlp2424/mac