matticus008 said:I believe you activate toner save by holding down the "cancel" button as you turn on the printer. It should then turn the LED on and will remember it from that point onward. Download the PDF manual from Samsung's web site if that doesn't work. If you're looking for OS X drivers, be sure to download the plain DMG one (the .SIT ones would not install properly as I recall, even though the installer would report a success).
If the printer is idle, you can just switch it off from the main at the rear of the printer, but you might as well just leave it on all the time. It doesn't consume any real amount of power while idling, and it will just spin up and print whenever you need it and then reenter power save mode a few minutes after you're done.
Yep.nerdykarim said:third, toner refills from ebay are (allegedly) the cheapest way to fill the toner