Your search for "NIM-" revealed the following:

NEW Cisco NIM-1CE1T1-PRI ISR 4000 Series 1x Multi-Flex T1/E1 Router Module

SKU: NSN-2842
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NIM-8CE1T1-PRI ISR 4000 8x Voice/Channelized Data T1/E1 Router Module

SKU: NSN-2461
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco NIM-4BRI-NT/TE 4000 ISR Series 4x BRI Network Interface Router Module

SKU: NSH-7063
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Cisco NIM-2CE1T1-PRI ISR 4000 Series 2x T1/E1 Router Module

SKU: NSH-5379
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NIM-4T ISR 4000 Series 4x Serial WAN Router Network Interface Module

SKU: NSN-6528
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NIM-8MFT-T1/E1 ISR 4000 Series 8x MultiFlex T1/E1 Router Module

SKU: NSN-2498
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco NIM-4G-LTE-LA ISR 4000 Series 4G LTE Wireless Cellular Modem

SKU: NSB-6546
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Cisco NIM-VAB-A ISR 4000 Series 1x VDSL2/ADSL2+ Router Interface Card

SKU: NSB-0728
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NIM-2FXS/4FXO ISR 4000 Series 4x FXO 2x FXS Router Module

SKU: NSN-5154
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NIM-4FXS ISR 4000 Series 4x FXS Router Module

SKU: NSN-1474
Condition: New
Shipping: Overnight Options
Warranty: 365 days