HP Color LaserJet Enterprise Flow M776z All-In-One Laser Printer - Manual (Page 99)

Replace the staple cartridge (M776zs model only)
Install a new staple cartridge when your current cartridge is empty.
● Staple cartridge information
● Remove and replace the staple cartridge
Staple cartridge information
Replace the staple cartridge when the control panel prompts you.
Table 3-11 Staple cartridge information
Item Description Cartridge number Part number
HP Inner Finisher Staples Replacement staple cartridge Not applicable J8J96A
Remove and replace the staple cartridge
Follow these steps to replace the staple cartridge in the inner finisher accessory.
1. Open the inner finisher front door.
2. Grasp the colored tab on the staple cartridge
carriage, and then pull the staple cartridge carriage
straight out.
ENWW Replace the staple cartridge (M776zs model only) 85