Media Recommendations • 15Auto SwitchingIf you have identical paper stock loaded in the Multi-Purpose Tray orthe optional Second Paper Tray, you can have the printerautomatically switch to the other tray when the current tray runs outof paper. This function is enabled in the Print Menu.Media: Multi-Purpose TrayUse the Multi-Purpose (MP) Tray for printing card stock, labels,envelopes and transparencies. Or load a stack of letterheadstationery to switch to as needed.• A stack of media about 3/8'' (10 mm) high can be loaded into the MPTray, equivalent to about 10 envelopes or 50 transparencies.• Media should be loaded print side up, top edge facing into the printer.• Generally, the rear exit (Face Up Stacker) is used with the MP Tray.Important!The duplex unit can be used for paper only, at weights up to 28 lb.US Bond (105 g/m 2 metric, 58 lb. Index). Do not use the duplex(two-sided printing) function for labels, envelopes,transparencies, or paper heavier than 28 lb. US Bond.