Installing the Device
Installation 3-7
Figure 3-4 Installing the Device in a Rack
3.3.3 Connecting Power

To connect the 2E253-49R to the power sources, proceed as follows:

1. Plug each power cord into a grounded wall outlet, see Figure 3-5. To take advantage of the load

sharing and redundancy capabilities, each power cord must be plugged into a separate dedicated

ac outlet. The POWER (PWR) LED turns ON (green) and the CPU LED alternates between

green and amber during boot up. It takes approximately one minute for the 2E253-49R to boot

up.

NOTE The two power supplies in the 2E253-49R have automatic voltage sensing that allows
connection to power sources ranging from 100–125 Vac, 2.5 A or 200–240 Vac, 1.25 A,
50/60 Hz.
NOTE If the power-up sequence is interrupted on this device, or if optional hardware has been
installed or removed, this device may run an extended diagnostics sequence that may
take up to five minutes to complete.

Screws

19-Inch Rack 2600-05
2E253-49R COM
RESET
37482536132412 1PWRCPU
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
1
2
3
4
59
6
7
8
10
11
12
ETHERNET WORKGROUP SWITCH