The option for 2-Sided Printing (Windows) or Two-sided Printing Settings (Mac) is gray or not available. What should I do?

• Make sure you use a paper type and size that supports this feature. See the table below for supported paper types and sizes.

  Paper type	Size	Double-sided Printing Capacity
  		Auto		Manual
  Plain paper Copier paper Letterhead paper Recycled paper Colored paper Pre-printed paper High quality plain paper	Letter (8.5 × 11 inches [216 × 279 mm]), A4 (8.3 × 11.7 inches [210 × 297 mm]), Executive (7.25 × 10.5 inches [184 × 267 mm])	Up to the arrow mark		30 sheets
  	Legal (8.5 × 14 inches [216 × 356 mm]), 8.5 × 13 inches (216 × 330 mm), Oficio 9 (8.46 × 12.4 inches [215 × 315 mm]), Mexico-Oficio (8.5 × 13.4 inches [216 × 340 mm]), Half Letter (5.5 × 8.5 inches [140 × 216 mm]), A6 (4.1 × 5.8 inches [105 × 148 mm])	—		30 sheets
  	User defined paper size from 8.5 × 11 inches (216 × 297 mm) to 8.5 × 14 inches (216 × 356 mm)	250 sheets		30 sheets
  	User defined paper size from 3.5 × 5 inches (89 × 127 mm) to 8.5 × 14 inches (216 × 297 mm)	—		30 sheets
  	User defined paper size from 3.5 × 14 inches (89 × 356 mm) to 8.5 × 47.2 inches (216 × 1200 mm)	—		1 sheet
  Epson Bright White Premium Paper Epson Bright White Pro Paper Epson Multipurpose Plus Paper	Letter (8.5 × 11 inches [216 × 279 mm])	250 sheets		30 sheets
  Epson Premium Presentation Paper Matte Double-sided Epson Brochure & Flyer Paper Matte Double-sided	Letter (8.5 × 11 inches [216 × 279 mm])	50		20
  Epson Premium Presentation Paper Matte Epson Photo Paper Glossy1 Epson Premium Photo Paper Glossy1 Epson Ultra Premium Photo Paper Glossy1 Epson Premium Photo Paper Semi-gloss1	Letter (8.5 × 11 inches [216 × 279 mm]) and smaller	—		—
  Card Stock	Letter (8.5 × 11 inches [216 × 279 mm]), A4 (8.3 × 11.7 inches [210 × 297 mm]), Executive (7.25 × 10.5 inches [184 × 267 mm])	50		10 sheets
  	Legal (8.5 × 14 inches [216 × 356 mm]), 8.5 × 13 inches (216 × 330 mm), Oficio 9 (8.46 × 12.4 inches [215 × 315 mm]), Mexico-Oficio (8.5 × 13.4 inches [216 × 340 mm]), Half Letter (5.5 × 8.5 inches [140 × 216 mm]), A6 (4.1 × 5.8 inches [105 × 148 mm])	—		10 sheets
  	User defined paper size from 8.5 × 11 inches (216 × 297 mm) to 8.5 × 14 inches (216 × 356 mm)	50 sheets		10 sheets
  	User defined paper size from 3.5 × 5 inches (89 × 127 mm) to 8.5 × 14 inches (216 × 297 mm)	—		10 sheets
  	User defined paper size from 3.5 × 14 inches (89 × 356 mm) to 8.5 × 47.2 inches (216 × 1200 mm)	—		1 sheet
  Envelopes	No. 10 (4.1 × 9.5 inches [105 × 241 mm])	—		—