Samsung SCX-3405W Network Printer & Scanner Installation/Configuration on Ubuntu 12.04
I configured the wifi settings of the printer using the USB connection, a Windows PC, and the Windows portion of the Installation CD provided with the printer. After it was configured, I disconnected it from the USB, so there is only the power cable now.
Here is the quick and dirty guide on how to install the Samsung SCX-3405W Network Printer (and Scanner) on Ubuntu 12.04, which should also work for older Ubuntu releases, as well as other Debian based distributions.
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