NAS: LG NAS 2TB N1A1 (firmware 10119) Printer: Canon MG2220 Laptop: MacBook Air with Mac OS Lion version 10.7.5 Printer Drivers: Downloaded from Canon website and installed the MG2220 printer driver on my Mac. -- I connected the printer to NAS via A/B USB cable. I enabled network printer from the web menu of NAS. NAS web menu confirms and displays the printer. I then added the printer using my laptop by going thru the system preferences > printers > add using the "+" sign > select windows > select workgroup > select lg nas > select the Canon MG2220 from the menu. Everything seems to be fine as I can find and add the printer on my laptop, however whenever I send a print job to the printer, the printer icon appears in the Dock area at the bottom of my desktop and then it displays an exclamation mark. When I click on the icon, it displays a screen where it says 306 communication error, and complains that it cannot communicate with the printer. If I unplug the printer from the NAS and connect the printer directly to my MacBook Air, then it prints everything just fine. So I can certainly tell there is nothing wrong with the printer driver I installed from the Canon website. I don't know how I can make it work to print using the USB port on NAS. Can anyone please help?