HP Officejet Pro X576 Multifunction Printer series - Manual (Page 96)

Replacement instructions
Replace the ink cartridges
The product uses four colors and has a different ink cartridge for each color: yellow (Y), cyan (C),
magenta (M), and black (K).
1. Open the ink cartridge door.
2. Push the old ink cartridge inward to unlock it.
80 Chapter 7 Ink cartridges ENWW