NM-4E | Cisco 4-Ports 10MB RJ-45 Network Module

1. Interface Type: Expansion module
2. Form Factor: Plug-in module
3. Data Transfer Rate: 128 Kbps to 2 Mbps
4. Connectivity Technology: Wired
5. Cabling Type: Serial
6. Network / Transport Protocol: PPP, HDLC, X.25, Frame Relay
7. Compatibility: Cisco 1720, 1750, 1760, 2600, 2610, 2611, 2612, 2620, 2621, 2622, 2650, 2651, 2652, 2691, 3660, 3661, 3725, 3745
8. RAM: 16 MB
9. Flash Memory: 16 MB
10. Features: Full duplex capability, manageable
11. Expansion Slots: 4 (total) / 4 (free) x expansion slot
12. Dimensions (WxDxH): 3.8 in x 7.1 in x 0.8 in

Helpful notes:
1. The NM-4E module provides additional serial ports for Cisco routers, allowing for more connectivity options.
2. This module supports a variety of network protocols, making it versatile for different network environments.
3. The manageable feature allows for easy configuration and monitoring of the module.