After purchasing the MacBook Pro 13 Inch laptop, I tested it with my existing hardware, and the MacBook Pro running the Mac OS X Leopard 10.5.7 Operating System, IS compatible with the Lexmark X4850m Wireless All-In-One Printer, HOWEVER, I had to change my network print setup in order to make it work.
With that said, I like the new setup better, and I learned some things in the process. Along with the printer compatibility, I will touch on a few other related subjects on this page.
Prior to buying the MacBook Pro, I had four computers networked via the Netgear DG834G wireless ADSL2+ Modem Router. I had the wireless feature disabled, and the computers were networked using cables with Netgear 85 MBPS Wall-Plugged Ethernet Adapters, which turns any electrical outlet into a network Ethernet connection.
The Lexmark 4850 was attached to one of my desktops by USB cable, and was configured as a shared printer on the network. The Lexmark 4850 worked very well with this setup.
When I first hooked the MacBook Pro up to the network, I connected it to an etherlink cable, and all of my windows shared drives showed up in the MacBook Pro Finder immediately. No problems there.
Next, I downloaded the Lexmark drivers from Lexmark.com. I would later learn that using the drivers from Lexmark.com works much better than installing the software from the Lexmark CD, so I would suggest to anyone to use the drivers from the Lexmark site rather than the CD that came with the printer.
After the drivers were downloaded and installed on the MacBook Pro, I then attempted to install it by all the options available – IP-LPD, Windows, Advanced Windows SMB and the localhost:631, all with no success. I then scoured the internet for possible solutions, but none of the solutions that had worked for others worked for me.
In all the install attempts, I ran into a variation of an unable to connect to the printer message. In some cases, it appeared to connect. I would get no error message, but nothing would print after hitting the print button.
Finally, after nothing else would work, I decided to enable the wireless feature on the Netgear DG834G and try using the built in Airport on the Mac to connect to the network, and then use the wireless feature on the printer to connect to it.
Connecting to my network wirelessly through Airport was a snap! It immediately found my network; I supplied the password, and I was connected. The internet was available and all of my shared drives were still listed, just like they were through the etherlink cable.
As of December 2013, I no longer use this printer. I was not able to connect to it consistently with my MacBook Pro after I had Google Fiber installed, even using the Lexmark Wireless Setup Assistant. The problem appears to be that Lexmark does not provide an option for the same security encription. I used to know more details about this problem, but my fiber was installed in late summer 2013, and I have not revisited this problem much since then.
I replaced this inkjet printer with the Brother HL-2270DW Laser Printer. The Brother HL-2270DW does not have a scanner, so I have not decided if I am going to use the Lexmark X4850m scanner, or my dedicated scanner on another computer on the network.