[shortdesc] Expansion module RS-232 x 24 for Cisco 4451-X; ISR 4221 4321 4331 4351 4431 [/shortdesc] [properties] Properties Cisco NIM-24A 24-Port Async Serial Network Interface Module Description High-density RS-232 terminal server NIM for out-of-band console access to remote devices Product Type Async Serial Network Interface Module (NIM) Compatibility Cisco ISR 4000 Series: 4221, 4321, 4331, 4351, 4431, 4451 Mount Type Internal router slot (hot-swappable) [/properties] [specifications] Interface Type RS-232 asynchronous Ports 24 async serial ports (via Octal cables) Recommended Baud Rate 9600 bps Max Baud Rate 115200 bps (low connection count) Software Support IOS XE 16.3.1 or higher, IP Base Dimensions (H x W x D) 32 x 89 x 172 mm Operating Temp 0°C to 40°C Humidity 10% to 90% non-condensing [/specifications] [accesories] Included Items NIM-24A module only (no cables included) Compatible Cables CAB-ASYNC-8 (mandatory for middle socket), CAB-HD8-ASYNC Optional Accessories RJ-45 to DB-25 modular adapters [/accesories] The Cisco Asynchronous Serial NIM are multi-protocol asynchronous serial network interface modules.