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Installing the MX2020 Mounting Hardware for a Four-Post Rack or Cabinet

 

Installing Cage Nuts, If Needed

Insert cage nuts, if needed, into the holes listed in Table 1 and Table 2. The hole distances are relative to the standard U division on the rack that is aligned with the bottom of the mounting shelf.

To install cage nuts in a four-post rack:

  1. On the rear side of both rack rails, insert cage nuts in the holes specified for the four-post mounting shelf. Install the cage nuts in the front of the front rail (see Table 1).
  2. On the front side of both rack rails, insert cage nuts in the holes specified for mounting the chassis. Install the cage nuts in the front of the front rail (see Table 2).

Table 1: Mounting Hole Locations for Installing the Four-Post Mounting Shelf

Hole

Distance Above U Division

6

3.25 in. (8.3 cm)

5

2.63 in. (6.7 cm)

4

2.00 in. (5.1 cm)

3

1.50 in. (3.8 cm)

2

0.88 in. (2.2 cm)

1

0.25 in. (0.6 cm)

Table 2: Mounting Hole Locations for Installing a MX2020 Chassis in a Four-Post Rack or Cabinet

Hole

Distance Above U Division

111

64.5 in. (163.8 cm)

102

59.25 in (150.5 cm)

93

54 in (127.2 cm)

84

48.75 in (123.8 cm)

75

43.5 in (110.5 cm)

66

38.25 in (97.15 cm)

57

33 in (83.8 cm)

48

27.75 in (70.5 cm)

39

22.5 in. (57.1 cm)

30

17.25 in. (43.8 cm)

25

14.25 in (36.2 cm)

12

6.75 in. (17.1cm)

7

3.75 in (9.5 cm)

The holes in the front-mounting flanges are space at 3 U (5.25 in. (13.3 cm)).

Installing the Four-Post Mounting Shelf

To install the four-post mounting shelf (see Figure 1):

  1. Slide the shelf between the rack rails, resting the bottom of the shelf on the rack rail supports. The shelf installs on the front of the rear rails, extending toward the front of the rack. Note

    There must be a minimum of 45-U unobstructed front-to-back usable rack space when installing the MX2020 router into a four-post rack or cabinet.

  2. Partially insert screws into the open holes in the rear flanges of the four-post mounting shelf.
  3. Tighten all the screws completely.
  4. On the front of each front rack rail, partially insert a mounting screw into the holes in each ear of the four-post mounting shelf.
  5. Tighten all the screws completely.
    Figure 1: Installing a Four-Post Mounting Shelf
    Installing a Four-Post Mounting
Shelf
    Note

    The two rear flanges on the four-post mounting shelf are adjustable from 24in (60.96cm) to 30.6in (77.72cm) to accommodate different types of racks rails. If you need to extend the depth of the rack, you can purchase an extended mounting kit (MX2K-TRAY-XTND-S). The kit contains rack mount tray brackets that have an adjustable range from 30in (76.2cm) to 36.6in (92.9cm). Figure 2 illustrates how to install an extended rack.

Figure 2: Installing an Extended Rack
Installing an Extended
Rack

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