Your search for "nim-" revealed the following:

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

NEW Cisco NIM-2T ISR 4000 Series 2x Serial Port Router Interface Module

SKU: NSN-5450
Condition: New
Shipping: Overnight Options
Warranty: 365 days

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

SKU: NSH-5379
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

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

NEW Cisco NIM-2GE-CU-SFP ISR 4000 2x 1GB Combo (SFP/RJ45) Router Module

SKU: NSN-4219
Condition: New
Shipping: Overnight Options
Warranty: 365 days

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

SKU: NSN-8791
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NIM-4MFT-T1/E1 ISR 4000 Series 4x T1/E1 Router Module

SKU: NSN-3175
Condition: New
Shipping: Overnight Options
Warranty: 365 days