Attach the Switch to a Rack or Cabinet

To attach a switch to a four-post rack or a cabinet, follow these steps.

Take care to load the rack so that it is not top-heavy. Start installing equipment at the bottom and work up.

Attach a rack ear to one side of the switch, screwing it into the holes so that the flange (ear) is flush with the front of the switch for a front mount.
If you are mid-mounting the switch, set the flange toward the back of the switch.
The following figures illustrate how to attach the brackets for two common mounting options.
- Mid-Mount: Attaching Short Mounting Brackets shows a mid-mount configuration using a short mounting bracket.
- Front Mount: Attaching Short Mounting Brackets shows a front-mount configuration using a short mounting bracket.
Mid-Mount: Attaching Short Mounting Brackets

Front Mount: Attaching Short Mounting Brackets
Attach the other rack ear to the other side.
If using screws other than those provided, ensure that the threaded length of the screws is within 4 to 5 cm.
Attach the rack rails to both sides of the switch using rack screws (rack screws provided).
Attach the rack ears to the front rack posts, using the screws (rack post screws not provided).
Slide the rack rails into the rack ears on both sides, and adjust them to the appropriate rack depth.

Attaching the Side Rails
Attach the rack rails to the rear rack posts, using the rack screws (not provided).
If a grounding lug is present, ground the switch.
1. At one end of the wire, strip the insulation to expose 1/2 inch (12 mm) of bare wire.
2. Identify the grounding lug on the back of the switch.
3. Insert the stripped wire into the grounding lug.
4. Tighten the retaining screw with a straight-tip torque screwdriver to 20 in-lb (2.25 N m).
5. Connect the other end of the wire to a known reliable earth ground point at your site.

After the switch is secured to the rack or cabinet, install optional components using the instructions in Installing Optional Components.

After installing optional components, install one or two power supplies using the instructions in Installing Internal AC Power Supplies.