Vivotek ND9541 User Manual page 16

VIVOTEK - Built with Reliability
3. Secure the inner rails to the sides of the chassis using the M4 screws.
4. Secure the L-shape brackets to the front- and rear-ends of outer rails using the black round
head screws and washers. Do not completely tighten the screws yet. Adjust the length of slide
rails by extending and matching the rails between rack posts.
16 - User's Manual
M4 x6
M4 screws
Locking Clip to the rear