How do I change the Power Off Timer setting?

On Windows, go to Devices and Printers, right-click your printer, select Printer Properties, click the Optional Settings tab, then Printer Settings, and select the time period you want before the printer turns off automatically. On Mac OS X, go to System Preferences, select Print & Fax, your product, and Options & Supplies, then select Utility and Open Printer Utility to access the same Power Off Timer settings.