Dell PowerConnect J-EX8216 Hardware Manual page 123

The power cord tray uses 1 U of rack space, so the total space occupied by a J-EX8216
switch chassis and power cord tray is 22 U.
Ensure that you have the following tools and parts available to install the power cord
tray:
A Phillips (+) screwdriver, number 1, 2, or 3, depending on the size of your rack mounting
screws
A flat-blade (-) screwdriver if you are installing the power cord tray in a rack with square,
nonthreaded holes
4 mounting screws—and 4 cage nuts and washers if your rack requires them—of the
appropriate size to attach the power cord tray to the rack
To install the power cord tray (see Figure 43 on page 108):
Remove the power cord tray from the accessory box.
1.
Decide where to position the switch in the rack. If the rack is empty, choose the lowest
2.
possible location. See "Rack Requirements for a J-EX8216 Switch" on page 69 and
"Cabinet Requirements and Specifications for a J-EX8216 Switch" on page 71.
NOTE: Installation of a J-EX8216 switch in a two-post rack is not
supported.
If your rack has unthreaded round or square holes, install 4 cage nuts in the appropriate
3.
holes on the right and left front rack posts, making sure that the 2 cage nuts on each
post are on the same rack level front and back.
Use Figure 41 on page 107 or Figure 42 on page 108 to help you with cage-nut installation.
Figure 41: Installing a Round-Hole Cage Nut (Clip Nut)
Chapter 8: Installing the Switch
107