How do I change the power off and sleep timer settings on the ET-2400?

For Windows: Right-click the printer icon in the taskbar, select Printer Settings, click the Maintenance tab, then click Printer and Option Information. Select the desired Power Off Timer and Sleep Timer settings and click Send. For Mac: Go to System Preferences, select Printers & Scanners, select your product, choose Options & Supplies, select Utility, and open Printer Utility to adjust both timers. (Pages 16-17)