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3Install the mounting rails to the rack posts.

(1)Determine the vertical position in the rack. Refer to “Vertical mounting hole pattern” on page 154 for more information.

(2)Align and insert the mounting rail into the rack posts’ mounting holes (A).

(3)Make certain the proper mounting holes on the rack post are selected.

(4)Use two metal screws to secure the front and rear mounting rail to the rack (B).

(5)Do the same thing to the other mounting rail.

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Acer R920 Series manual 157