TP-Link TL-PS110P User Manual page 59

1) Check the wireless network connection, especially from the workstation running the
PSAdmin to the print server unit.
2) Upgrade the print server again by PSAdmin or WEB browser.
4) Question D
The setup Wizard can't find print server.
Possible Explanation:
The Personal Firewall installed in your computer blocks the connection.
Solution:
Please disable the Personal Firewall temporarily or adjust the security level to lower.
TL-PS110P Single Parallel Port Fast Ethernet Print Server
53