Summary: I am using the MF4690 in a Linux server environment. I would have preferred to be able to use NFS but it isn't support with the MF4690, so instead of I have to use Samba (aka SMB) if you want users on your network to be able to walk over, place something on the scanner and hit a button to scan it directly to the file server. Don't be mistaken with USB, you can use USB but this requires the user to be at a workstation to click on prompts to scan an item in.
Summary: I have had this multifunction printer for several months now. I used to have the HP Laserjet 3030. The Canon "wakes up" form sleep mode very quickly,and prints more pages per minute than the HP, which is very helpful (although printing more pages per minute than my old HP 3030 is probably no great accomplishment). The HP also took a long time to warm up the scanner bulb, which is not an issue with the Canon.
Summary: Well, I've finally reached my maximum level of frustration. I have 22 Canon 4690s in various offices. They have been great, the Fax to email works fine, does a good job of copying and printing - though the toner cartridges are a bit expensive (they are alternatives). Every so often one of the machines gets an internal paper jam and that requires some service; but that is rare.
Summary: This is probably nearing the end of its product cycle. It is a fantastic Windows networked printer (wired), but even with the 1.8 version OSX drivers (that you download, no MAC drivers or documentation is enclosed), I cannot get it to print networked as a standalone printer. It is possible, however, to print over the network if it is "shared" by a windows computer. Scanning is to USB. It will work with a MAC if connected by USB, and it works very well.
Summary: I was very satisfied with it. Starts printing fast. Double-sided printing. Setting up on the network was easy and worked the first try. Great quality copying. Not as bulky as other brands/models. But after 2 months and a half of use and less than 1000 prints: - toner life is short - it broke. Seems to be the power supply. Took it to a local Canon service facility and it has been there for 2 weeks. They are not able to tell when it will be ready.
Summary: First of all let me say that if you're a PC user, read all the other reviews of this unit. It really is a nice unit with all the features described. The reason I'm giving it two stars is because of what I feel is Canon's intentional misleading of the public when they claim that this is Mac compatible. From the box to the manual to the website, Canon uses the Mac logo to communicate that this unit is Mac compatible. This is only PARTIALLY true.