HP Color LaserJet Enterprise Flow M776z All-In-One Laser Printer - Manual (Page 39)

Table 2-2 Letterhead or preprinted—landscape (continued)
Duplex mode Paper size How to load paper
1-sided printing A4, Letter, Executive, A5, 16K (197x273 mm)
16K (195x270 mm), 16K (184x260 mm), B5
(JIS), Double Japan Postcard (148x200 mm)
Face-down
Bottom edge leading into the printer
NOTE: This is the preferred orientation when printing on A4 or
Letter.
Automatic 2-sided printing or with
Alternative Letterhead Mode
enabled
A4, Letter, Executive, A5, 16K (197x273 mm)
16K (195x270 mm), 16K (184x260 mm), B5
(JIS), Double Japan Postcard (148x200 mm)
Face-up
Top edge leading into the printer
NOTE: This is the preferred orientation when printing on A4 or
Letter.
ENWW Load paper to Tray 1 (multipurpose tray) 25