3. Tighten all the 8-32 x 5/16-in. screws to a torque of 15 in-lbs. (17 cm-kgs).
FIGURE 40 Attaching the rear bracket to the device
1. Screws, 8-32 x 5/16-in., panhead Phillips
Installing the Universal Four-Post Rack Kit (XBR-
R000296)
Use the following instructions to install 1U and 2U devices in EIA racks that are between L-12.7 to 81.28 cm deep (L-5.0 to 32.0 in.),
where L is the chassis depth, using the Universal Four-Post Rack Kit (XBR-R000296).
There are two ways you can mount the device in a four-post rack:
• With the port side
ush with the front posts.
• With the nonport side ush with the rear posts in a recessed position. A recessed position allows a more gradual bend in the
ber-optic cables connected to the switch and less interference in the aisle at the front of the rack.
TABLE 1 Space requirements
Chassis with port-side
side vents
Notes Chassis depth Minimum rack depth Maximum rack depth
No Applicable to port-side and nonport-side ush
mounts.
L L-12.7 cm (L-5 in.) 81.28 cm (32 in.)
Yes Applicable to port-side ush mounts. L L-12.7 cm (L-5 in.) 81.28 cm (32 in.)
Yes Applicable to nonport-side ush mounts. L L 81.28 cm (32 in.)
Note that if chassis depth (L) is less than 40.64 cm (16 in.), the chassis will not t into a rack with a maximum depth of 81.28 cm (32 in.)
using the universal four-post rack kit. The maximum rack depth for a chassis less than 40.64 cm (16 in.) is 81.28 cm (32 in.) minus the
dierence between the chassis depth and 40.64 cm (16 in.). For example, a chassis with a depth (L) of 35.56 cm (14 in.) is 5.08 cm (2
Installing the Universal Four-Post Rack Kit (XBR-R000296)
ExtremeSwitching VDX 6740 Hardware Installation Guide
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