Acer Altos G510 series - Manual (Page 124)

Appendix B: Altos G510 Rack Installation Guide 114
Do the same thing with the other rack bracket.
5 Attach the inner rails to the top and bottom (sides) of the server
with the release catches toward the front of the system.
(1) Align the inner rail to the five screw holes located on the
bottom of the server.
(2) Secure the rail to the server using #8-32 (1 on page 113)
screws.
Attach the other inner rail to the top side of the server.
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