Conclusion: Very disappointed on this product. IT is very difficult to set up to send/receive fax using the phone line. Scanning has an error message without error code: "An Error Occurred, Close?", totally don't know how to fix it.
Cons: Difficult to use, Difficult Setup, unreliable
Excerpt: I have owned a couple of dozen lazer printers, including several Canons. This is my last Canon product ever. I have had the 4890 for three months and am very unhappy The problem is the design. Two sided printing is the default and it is very hard to change. Why isn't two sided an option? Why isn't there a really simple and clear way to switch between one and two sided. I have researched this and it is a common complaint. Scanning is a bit of a pain and fairly slow also.
Worked great under Win XP and Win 8 / broken under Win 8.1
A. Kohen, Amazon
1 June 2014
Summary: Made the mistake of "upgrading" from Win 8 to Win 8.1. Had to delete drivers and reinstall from Canon website. TWICE! Extremely flaky. Have to reboot laptop/reset LAN on laptop and printer/ and pray that scanner or fax will work properly. Really unfortunate. Was a great device under XP and even 8. Not recommended for Win 8.1.
Summary: Hi, I cannot install its wireless driver on win7 PC, even I do have admin privilge. it sucks! and I only used usb connection before, now I have passed return window. even tried download driver from canon website, doesnt work either.
Conclusion: The printer seems very well made, however I cannot install the drivers for it. The installer tells me I lack administrator privilege but this is not correct. Have searched support and it appears there is no help area to ask for help. I will be returning this product.
Summary: I bought this printer to replace a workhorse Brother all in one laser printer. I was aware that the replacement cartridges were almost twice the Brother ones, and assumed they would last longer based on good reviews. Wrong!! Same type of machine, identical working conditions - and the cartridges last one month almost to the day in both cases. The bottom line is that our ongoing printing cost just almost doubled.
Excerpt: Machine arrived in pristine box, but portion of cover not assembled correctly--right side of cover not "snapped in." Forced it in myself but miracle it didn't break. Very junky plastic-y seeming machine. Wouldn't recommend.