HP EliteOne 800 G2 23 inch All-in-One HP EliteOne 705 G2 23-inch Touch All-in-One HP ProOne 600 G2 21 inch All-in-One - Maintenance & Service Guide

9. Remove the two Torx screws (2) that secure the board, and then rotate the board up and remove it from
the computer (3).
10. Remove the serial/PS2 board from the computer.
To install the serial/PS2 board, reverse the removal procedures.
72 Chapter 4 Removal and Replacement Procedures