8 > B401/B411/B431
• Manual Feed tray for B401/B411: to feed single sheets, heavy
paper stocks, envelopes, other special media and can also be
used as manual duplex.
Additionally, the following optional features are available:
• 64 and 256 MB RAM DIMM: to extend the main memory of
your printer and speed up the processing of large files (only
for B411/B431).
• Second paper tray: to increase your printer’s paper handling
capacity by 530 sheets (20-lb. US Bond, 75 g/m²) (only for
B411/B431).