We discussed it many times... Have a search before posting next time using Google, the internal search is not so good.

Assuming you are on V8, pos restaurant module works just with a bunch of EPSON printer:

device_list = [
    { 'vendor' : 0x04b8, 'product' : 0x0e03, 'name' : 'Epson TM-T20' },
    { 'vendor' : 0x04b8, 'product' : 0x0202, 'name' : 'Epson TM-T70' },
    { 'vendor' : 0x04b8, 'product' : 0x0e15, 'name' : 'Epson TM-T20II' },
]

Is not possible use USB or SERIAL connected Thermal printer (for now).

To see if your IP printer is compatible, even if not on the list, you need to install the hw_escpos module and edit the py file

odoo/addons/hw_escpos/escpos/supported_devices.py 

with your vendor/model information. Restart the server and look on the log if the printer was successfully identified.

Good luck!

I am trying to connect a Bixolon as kitchen printer and dosent work, it does work as invoice printer but not kitchen.

any sugestions ?

Regards,

Have a Bixolon SRP 350

You may also want to check the features of the PosBox: https://www.odoo.com/shop/product/point-of-sale-posbox-312