Chapter 3: Installation

3-4 2E48-27R/2E49-27R User’s Guide

Figure 3-1 Tabletop or Shelf Installation3.3.2 Rackmount Installation

To install the 2E4X-27R in a 19-inch rack, Cabletron Systems includes an

accessory kit containing the rackmount brackets, mounting screws, and a

strain-relief bracket for cable management.

Guidelines for the Rackmount Installation

The installation site must be within reach of the network cabling and meet

the requirements listed below:

An appropriate grounded power receptacle must be located within

seven feet of the location.

Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at

the installation site with fluctuations of less than 10°C (18°F) per hour.

!
CAUTION
To ensure proper ventilation and prevent overheating, leave a
minimum clearance space of 5.1 cm (2.0 in) at the left, right,
and rear of the 2E4X-27R.
WARNING
Before installing the 2E4X-27R into a rack, ensure that the rack
supports the device(s) without compromising the stability of the
rack. Otherwise, personal injury and/or equipment damage
may result.
23142-06
A = 15 cm (6 in)
B = 45 cm (22.5 in)
C = 53 cm (21 in)
C
B
A
D
D = 213 cm (84 in)
2625
RX TX
RX TX
24
RX TX
8
RX TX
16
RX TX
23
RX TX
7
RX TX
15
RX TX
22
RX TX
6
RX TX
14
RX TX
21
RX TX
5
RX TX
13
RX TX
20
RX TX
4
RX TX
12
RX TX
19
RX TX
3
RX TX
11
RX TX
18
RX TX
2
10
17
RX TX
1
RX TX
9
RX TX
COM
RESET
2E48-27RPWRCPU