No sure why you are asking Xerox and not IOGear, but according to the manual you just use the Xerox drivers and supply them on page 13 to the device.
What printer settings should I use to print wirelessly using a USB 2.0 print server (Iogear USB Print server GPSU21) connected to wireless adapter (Iogear Ethernet-2-WIFI Universal Wireless Adapter GWU637)? The set up is: USB 2.0 cable from printer to print server, ethernet from print server to wireless adapter, wireless adapter connected to WiFi network.
This set up worked printing wirelessly from my Windows 7/10 laptops, but the printer settings changed and now it won't print.
There is no Xerox wireless adapter, and none are available in the market for the Phaser 6600.