Tyan Computer GX21 用户手册

When fully extended, the sliding rails 

will lock. The release mechanism is located 
on the sliding rail as shown. Press the 
release mechanism while pushing the sliding 
rails to shorten them.

6. With the rails in their shortest condition, adjust both front 

mounting brackets so that they are flush with the front of 
the unit.

7. Accurately measure the depth of your rack and adjust the 

rear brackets accordingly.

8. When all brackets are positioned correctly, tighten them.