Cisco Cisco 1900 2900 3900 Series 4-Port Gigabit Ethernet HS-WIC with PoE Installation Guide

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Installing the Cisco 1-, 2-, and 4-Port Serial Network Interface Modules for Cisco 4400 Series ISRs
  About the Cisco 1-, 2-, and 4-port Serial NIMs
2
Installing the Cisco Multiprotocol Synchronus Serial NIM
The Cisco 1-, 2-, and 4-Port Serial Network Interface Modules for Cisco 4400 Series ISRs family 
consists of 3 compact serial NIM SKUs in single-wide NIM form factor
 shows the front panel 
of the 1-port serial NIM, 
 shows the front panel of the 2-port serial NIM, and 
 show the 
front panel of the 4-port serial NIM, respectively. The LEDs for each port can be located at the bottom 
of the port. The EN and COMM LEDs are a bi-color LEDs. The LEDs are described in 
Table 1 on 
page Reference 2
Figure 1
1-port NIM: Front Panel
Figure 2
2-port NIM: Front Panel
Table 1
Cisco 1-port, 2-port, and 4-port Serial NIMs
SKUs
Description
Supported Interfaces
NIM-1T
1 port multi-protocol Synchronous Serial NIM
V.35, RS232, X.21, RS449, RS530, 
RS530A
NIM-2T
2 port multi-protocol Synchronous Serial NIM
V.35, RS232, X.21, RS449, RS530, 
RS530A
NIM-4T
4 port multi-protocol Synchronous Serial NIM
V.35, RS232, X.21, RS449, RS530 
RS530A
390900
CONN
CONN
1T
1
EN LED
2
PORT (COMM) LED
390642
CONN
CONN
2T