Dell DS-32M2 Installation Guide - Page 14

Installing the DS-16M and DS-32M Rails 3. Adjust the length of the rail to fit between the channels in the rack/cabinet. NOTE: The rail flanges go to the inside of the channels. 4. Once the rails are adjusted to the correct length, tighten the kep nuts. NOTE: If the side skins are removed on the rack/cabinet, you can tighten the kep nuts after you install the rails. 5. Align two of the holes of the front rail flange to two holes on the inside of the front channel. The top screw hole is used for the screw; the bottom screw hole is used for the ball stud when installing in a 39U cabinet. Flange to the inside of the channel 6. If you are installing a switch in a 39U cabinet, secure the rail to a round-hole channel with one M5 x 12 mm pan-head screws and one #10 flat washer and ball stud (see the table on page 3), or secure the rail to a square-hole channel with one square-hole washer and M5 x 16 mm screw and one #10 flat washer and ball stud (see the table on page 3). Leave the screw and ball stud finger-tight. Tighten them after the switch is installed. See the figures below. NOTE: The ball studs support the bezel. 14 EMC Departmental Switches DS-16M2 and DS-32M2 Installation Guide