Acer Altos G530 Series - Manual (Page 170)

Appendix B: Acer Altos G530 rack installation guide 160
3 Attach the inner rails to the mounting shelf.
(1) Align the inner rails to both sides of the mounting shelf (1).
(2) Secure the rails to the mounting shelf using ten #8-32 screws
(see page 157) (2).
4 Install the server into the mounting shelf.
Caution! To avoid personal injury, care should be taken when
pressing the inner rail release latches and sliding the component
into the rack.
(1) Place the server on the mounting shelf (1).