Synology NAS FS6400 Hardware Installation Manual page 17

5 Push the chassis towards the rack. Use the cage nuts and screws in the rail kit package to secure the chassis
to the rack if necessary.
To remove the rail kit:
1 To remove the chassis from the rack, hold the rail kit release tabs on the ear holders and pull out the chassis
from the rack.
2 With the help of another person, carefully remove the chassis from the rack. Then, slide forwards to remove
the inner rail from the chassis.
17 Chapter 2: Hardware Setup