Before installation, power on the printer and connect it to computer via USB cable, otherwise, the printer can't be detected by computer and installation will be invalid.
1. Visit https://www.polono.com/pages/driver-user-manual to download driver files and open.
2. If it shows "Windows ptotected your PC", click on "More info", then click on "Run anyway" to continue.
3. Install by steps.
4. Right-click on "This Computer", click on "Manage"
5. Click on "Device Manager", click on "Universal Serial Bus controllers", click on "USB Printing Support", then click on "Properties"
6. Click on "Details" tab, select "Bus relations", remember the last digits of "Value", for here, as example, "USB006"
7. Go to "Settings"-"Bluetooth & devices"-"Printers & Scanners"-"POLONO FT800", click on "Printer properties"
8. Click on "Ports", select port as "Value" above shows, for here, as example, "USB006", then click on "Apply"
9. Open any file, select printer as "FT800", set paper size as "US Letter", then print.