The following steps are only relevant to Star printers.
To start connecting the printer, remove the rear cover.
You will then need to connect the ethernet cable to your printer.
Please make sure the ethernet port you are using is connected to the same network as your device.
Connect the ethernet cable to the LAN port.
When you first connect the printer, it gets a dynamically assigned IP address. You need to get this address to start programming it.
Turn off the printer.
On the front, press and hold the FEED button and while tapping the Power button, turn on the printer.
Once the printer starts printing paper, you may release the FEED button.
The printer will print two separate items. Wait to tear until the second piece comes out.
At the bottom of the second printout, you will see the IP address. Take note of this for the following steps.
Assign the printer a static IP address
Open the web browser of the computer that will access the printer.
Navigate to the IP address you received.
Click System access > Login.
The default username is root and the password is public.
Please note: You will be required to pick a new password but you can simply enter public again and press Save. If you choose to change the password, please take note of this password and save it.
Click IP parameters.
Set an IP address that you're sure is available for static use and won't be assigned by your DHCP server/service.
Set the Subnet mask and Default gateway to match your current network settings.
On the screen that says Static address condition is accepted! make sure to click Save in the Network Configuration menu. If you don't press Save, the changes won't be saved to the device.
When prompted, select Save --> Configuration printing --> Restart device.