Checking the Cabinet or Rack

Table 1 describes the requirements for the cabinet or rack where an S2700, S3700, S5700, or S6700 series switch will be installed in indoor equipment rooms.

**Table 1** Requirements for the cabinet or rack
Item	Requirement
Width	The S2700, S3700, S5700, and S6700 series switches have standard dimensions and can be installed in a standard 19-inch cabinet or rack (such as an N66E or N68E cabinet).
Depth	If you use a non-standard cabinet or rack, ensure that there is a sufficient space. When equipped with 1150 W PoE power modules, the switch cannot be installed in a 600 mm (23.6 in.) deep cabinet.
Distance between front and rear mounting rails	To install an S5710-EI, S5710-HI, S5720 (420-mm deep models), S5730-SI, S5730S-EI, S5730-HI, S5731-H, S5731-S, S5731S-S, S5731S-H, S5732-H, S5735 (420-mm deep models), S6720 (420-mm deep models), S6730-S, S6730S-S, S6730S-H, or S6730-H switch into a cabinet, install front and rear mounting brackets on the switch. Ensure that the distance between front and rear mounting rails is within the specified range. For details, see Using Front and Rear Mounting Brackets and Using Front Mounting Brackets or Cable Management Frames and Rear Mounting Brackets. If the distance between front and rear mounting rails does not meet the requirement, use a pair of guide rails or a tray (purchased separately).
Grounding	The cabinet or rack must have reliable ground points for grounding the chassis.

Figure 1 shows the points from which to take measurements for the cabinet width (a), the cabinet depth (b), and the distance between front and rear mounting rails (c).

Figure 1 Measuring a cabinet

Table 2 describes the requirements for an outdoor cabinet where an S5720I-SI series switch will be installed.

**Table 2** Requirements for an outdoor cabinet
Item	Requirements
Width of the mounting rails of an outdoor cabinet	The mounting rails supported by the standard mounting brackets delivered with the S5720I-12X-SI-AC and S5720I-12X-PWH-SI-DC must have a width of 272.5 mm to 278.5 mm. The mounting rails supported by the standard mounting brackets delivered with the S5720I-28X-SI-AC and S5720I-28X-PWH-SI-AC must have a width of 462 mm to 468 mm and support switch installation in a 19-inch standard cabinet. Installation of the 5720I-12X-SI-AC and S5720I-12X-PWH-SI-DC in a 19-inch cabinet requires front mounting brackets (part number: 21240477), which can be purchased separately.
Installation space	Ensure that the outdoor cabinet has sufficient installation space and its depth is not less than that of the switch. In addition, pay attention to the following: If G.657.A2 short-jacket optical fibers are used, the distance between the front panel of the switch and the front door of the cabinet must be at least 55 mm. If G.652 long-jacket optical fibers are used, the distance between the front panel of the switch and the front door of the cabinet must be at least 85 mm. Leave at least 50 mm (2.0 in.) clearance around the switch for heat dissipation. Do not install a switch with its air intake vent facing or close to the air exhaust vent of other devices.
Grounding	The cabinet must have reliable ground points for grounding the chassis.