View source for Network Module Slots Available on Cisco Access Routers

==Network Module Slots Available on Cisco Access Routers==

{| border = "1"
||Cisco Router
|align="center"|Number of Slots
|align="center"|Slot Type
|align="center"|Slot Numbering
|align="center"|Installation Notes and Limitations
|-
|[http://www.nesevo.com/cisco/cisco-routers/cisco2600-series-routers.html Cisco 2600 series]
|align="center"|1
|align="center"|Single-wide
|align="center"|Slot 1
|align="center"|Does not support extension modules.
|-
||[http://www.nesevo.com/cisco2811.html/ Cisco 2811 routers]
|align="center"|1
|align="center"|Single-wide
|align="center"|Slot 1
|align="center"|Does not support extension modules.
|-
||[http://www.nesevo.com/cisco2821.html Cisco 2821 routers]
|align="center"|1
|align="center"|Single-wide / Extended single-wide
|align="center"|Slot 1
|align="center"|Extension modules are not supported in standard network module slots on this platform.
|-
|| 
|align="center"|1
|align="center"|Extension module
|align="center"|Slot 2
|align="center"|Extension module slots do not support other single-wide network modules.
|-
||[http://www.nesevo.com/cisco2851.html Cisco 2851 routers]
|align="center"|1
|align="center"|Single-wide/ Extended single-wide /Double-wide / Extendet  duble-wite
|align="center"|Slot 1
|align="center"|Extension modules are not supported in standard network module slots on this platform.
|-
|| 
|align="center"|1
|align="center"| Extension module
|align="center"|Slot 2
|align="center"|Extension module slots do not support other single-wide network modules.
|-
||[http://www.nesevo.com/cisco/cisco-routers/cisco3600-series-routers.html Cisco 3600]
|align="center"|2
|align="center"|Single-wide
|align="center"|Slot 0-slot 1
|align="center"|Does not support extension modules.
|-
||[http://www.nesevo.com/cisco3640-rf.html/ Cisco 3640]
|align="center"|4
|align="center"|Single-wide
|align="center"|Slot 0-slot 3
|align="center"|Does not support extension modules.
|-
||[http://www.nesevo.com/cisco3661-ac-rf.html/ Cisco 3660]
|align="center"|6
|align="center"|Single-wide / Double-wide
|align="center"|Slot 1-slot 6
|align="center"|Slot 0 refers to the board carrying fixed interfaces at the top of the chassis.
|-
||[http://www.nesevo.com/cisco3725-rf.html Cisco 3725]
|align="center"|2
|align="center"|Single-wide
|align="center"|Slot 1-slot 2
|align="center"|Slot 2 accommodates double-wide network modules. Tip: To install double-wide network modules, remove the slot divider.
|-
||[http://www.nesevo.com/cisco3745-rf.html Cisco 3745]
|align="center"|4
|align="center"|Single-wide
|align="center"|Slot 1-slot 4
|align="center"|Does not support extension modules.
|-
|| 
|align="center"|2
|align="center"|Double-wide
|align="center"|Slot 2, slot 4
|align="center"|Removing the slot divider changes slot numbering as follows:                                          •  Slot 1 and slot 2 become slot 2                                            •  Slot 3 and slot 4 become slot 4  Tip: To install double-wide network modules, remove the slot divider. 
|-
||Cisco 3825 routers
|align="center"|3
|align="center"|Single-wide / Extended single-wide /  Extension voice 
|align="center"|Slot 1-slot 3
|align="center"|To install double-wide network modules, remove the slot divider. Only one extension module can be installed per chassis.
|-
|| 
|align="center"|1
|align="center"|Double-wide / Extended double-wide
|align="center"|Slot 2
|align="center"|To install double-wide network modules, remove the slot divider.  Only one NM-36ESW network module bcan be installed per chassis.
|-
||[http://www.nesevo.com/cisco3845-v-k9.html Cisco 3845 routers]
|align="center"|4
|align="center"|Single-wide /Extended single-wide / Extension voice
|align="center"|Slot 1-slot 4
|align="center"|Only two extension modules can be installed per chassis.
|-
|| 
|align="center"|2
|align="center"|Double-wide / Extended double-wide
|align="center"|Slot 1, slot 3
|align="center"|Removing the slot divider changes slot numbering as follows: •  Slot 1 and slot 2 becomes slot 1  •  Slot 3 and slot 4 becomes slot 3  Tip To install double-wide or extended double-wide network modules, remove the slot divider. Only two NM-36ESW network modules can be installed per chassis.
|-
||Cisco MWR 1941-DC routers
|align="center"|1
|align="center"|Single-wide
|align="center"|Slot 1
|align="center"|Cisco MWR 1941-DC routers support single-wide network modules only.
|-
|}