| Cisco Router
| Number of Slots
| Slot Type
| Slot Numbering
| Installation Notes and Limitations
|
| Cisco 2600 series
| 1
| Single-wide
| Slot 1
| Does not support extension modules.
|
| Cisco 2811 routers
| 1
| Single-wide
| Slot 1
| Does not support extension modules.
|
| Cisco 2821 routers
| 1
| Single-wide / Extended single-wide
| Slot 1
| Extension modules are not supported in standard network module slots on this platform.
|
|
| 1
| Extension module
| Slot 2
| Extension module slots do not support other single-wide network modules.
|
| Cisco 2851 routers
| 1
| Single-wide/ Extended single-wide /Double-wide / Extendet duble-wite
| Slot 1
| Extension modules are not supported in standard network module slots on this platform.
|
|
| 1
| Extension module
| Slot 2
| Extension module slots do not support other single-wide network modules.
|
| Cisco 3600
| 2
| Single-wide
| Slot 0-slot 1
| Does not support extension modules.
|
| Cisco 3640
| 4
| Single-wide
| Slot 0-slot 3
| Does not support extension modules.
|
| Cisco 3660
| 6
| Single-wide / Double-wide
| Slot 1-slot 6
| Slot 0 refers to the board carrying fixed interfaces at the top of the chassis.
|
| Cisco 3725
| 2
| Single-wide
| Slot 1-slot 2
| Slot 2 accommodates double-wide network modules. Tip: To install double-wide network modules, remove the slot divider.
|
| Cisco 3745
| 4
| Single-wide
| Slot 1-slot 4
| Does not support extension modules.
|
|
| 2
| Double-wide
| Slot 2, slot 4
| 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
| 3
| Single-wide / Extended single-wide / Extension voice
| Slot 1-slot 3
| To install double-wide network modules, remove the slot divider. Only one extension module can be installed per chassis.
|
|
| 1
| Double-wide / Extended double-wide
| Slot 2
| To install double-wide network modules, remove the slot divider. Only one NM-36ESW network module bcan be installed per chassis.
|
| Cisco 3845 routers
| 4
| Single-wide /Extended single-wide / Extension voice
| Slot 1-slot 4
| Only two extension modules can be installed per chassis.
|
|
| 2
| Double-wide / Extended double-wide
| Slot 1, slot 3
| 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
| 1
| Single-wide
| Slot 1
| Cisco MWR 1941-DC routers support single-wide network modules only.
|
