Panasonic KX-TDA600

3. Push the release lever in the direction of the arrow so that the BUS-M card engages securely with the
connector on the back board.
Release Lever
Back Board
4. Turn the 2 screws clockwise to fix the BUS-M card in place.
Screws
96 Installation Manual
2.2.7 Installation of 4-shelf System (Side-by-side Type)