You have to install pyUSB mobule as dependency for hw_escpos

Hi,

same . i'm new in odoo and just tested v9.

pos printer supported are only USB one.

if you have a posbox device :

just connect the printer to the posbox

add an new Order printer using the posbox ip address and add it to the point of sale definition

if you don't have posbox device :

you'll have to setup a posboxless computer : install odoo with 3 modules : hw_proxy, hw_escpos and hw_scanner

and connect your USB printer to it.

Note : i just tested using ethernet printer and an ubuntu server.