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.

  • Letter (8.5 × 11 inches [216 × 279 mm])
  • Legal (8.5 × 14 inches [216 × 357 mm])
  • A4 (8.3 × 11.7 inches [210 × 297 mm])