Asus RS100-E5-PI2 - Manual (Page 40)

Chapter 3: Installation options 3-4
2. Attach the second inner rail to the other side of the chassis and secure with
three inner rail screws.
3. Select one unit of space (1U) on
the rack where you wish to install
the server.
4. Place three (3) nuts on the front
and three at the back. Do the same
to the corresponding side of the
rack.
Nuts
5. Adjust the length of the outer rail
to fit the length of the rack cabinet,
then fasten the two screws.
6. Secure the outer rail with two
screws at the front and rear of the
rack cabinet .
7. Find the corresponding 1U space
on the other side of the rack cabinet
then repeat steps 5 and 6 to attach
the other outer rail.