If you can't see the Pax S300 in your POS. And you've made sure that the device is configured properly.
If you still can't see the PAX Payment Terminal in your POS > Settings popup. Here's what you are seeing:
If you have plugged your PAX S300 into the network and you still aren't seeing it on this page, it may be due to a networking issue in your store. In order for your PAX device to appear, your PAX device and your computer need to be on the same subnet.
To make sure both your PAX device and computer are on the same subnet, you need to find the IP address of your PAX device. On your PAX device, click the "Menu" button on your PAX S300 (note, you're going to need to know the password to the device to follow these troubleshooting steps, usually it's 1234):
On the next page, click the down arrow:
Next, click the "Communication" button:
On the "Communication Options" page, click the down arrow:
Click "3. LAN Parameters" on the next page:
Click "2. IP Address" on the next page:
On the next page, you will see the IP address assigned to your PAX S300:
In order to confirm that your PAX S300 and computer are on the same subnet, you need to compare the first three sets of numbers in the IP address on both your PAX Device and your computer. If you need help retrieving the IP address of your computer, we'd recommend following this guide.
Once you get both IP addresses, you should compare them:
192.168.001.031 (PAX Device)
If the first three sets of numbers match (highlighted in bold), then you know they are on the same subnet. If the first three sets of numbers don't match, it is likely that you or your Internet Service Provider will need to reconfigure your router to put them on the same subnet.