Lexmark C522 - Manual (Page 122)

Accessing the system board
122
Installing and removing options
4 Use the illustration to locate the connector for the card being installed.
Warning: System board electrical components are easily damaged by static electricity.
Touch something metal on the printer before touching any system board
electronic components or connectors.
Firmware and
flash memory
card
connectors
Optional INA
card connector
Hard disk
connector
Memory card
connector