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Cisco CISCO3945E/K9

Cisco 3900 Series - 3945E with 4 onboard GE, C3900-SPE250/K9, 3 EHWIC slots, 3 DSP slots, 4 SM slots, 256MB CF default, 1 GB DRAM default, IP Base
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High performance with integrated services

The Cisco 3900 Series builds on the best-in-class offering of the existing Cisco 3800 Series Integrated Services Routers by now offering four platforms: the Cisco 3945E, Cisco 3925E, Cisco 3945, and Cisco 3925 Integrated Services Routers. The Cisco 3900 Series offers embedded hardware encryption acceleration, voice- and video-capable DSP slots, optional firewall, intrusion prevention, call processing, voicemail, and application services. In addition, the platforms support the industry"s widest range of wired and wireless connectivity options such as T1/E1, T3/E3, xDSL, copper, and fiber Gigabit Ethernet. The Cisco 3900 Series offers superior performance and flexibility for flexible network deployments from small business offices to large enterprise offices - all while providing industry-leading investment protection.

General Information

  • Product Type: Router
  • Product Series: 3900
  • Brand Name: Cisco
  • Manufacturer: Cisco Systems, Inc
  • Product Model: 3945E
  • Product Name: 3945E Integrated Services Router

Physical Characteristics

  • Compatible Rack Unit: 3U
  • Height: 5.3"
  • Width: 17.3"
  • Depth: 18.8"
  • Form Factor: Rack-mountable
  • Weight (Approximate): 39.02 lb


  • Total Number of Ports: 4
  • USB: Yes
  • Management Port: Yes
  • Number of Broadband (RJ-45) Ports: 4

Management & Protocols

  • Security Features:
    • Cisco Security Manager
    • Cisco IOS Firewall
    • Cisco IOS Zone-Based Firewall
    • Cisco IOS IPS
    • Cisco IOS Content Filtering
    • Flexible Packet Matching (FPM)
    • AAA

I/O Expansions

  • Number of Total Expansion Slots: 13
  • Expansion Slot Type:
    • Serial Module
    • HWIC
    • PVDM
    • SFP (mini-GBIC)


  • Package Contents:
    • 3945E Integrated Services Router
    • Cisco Services Performance Engine 250 (SPE250)
    • 3945E Integrated Services Router
    • Cisco Services Performance Engine 250 (SPE250)


  • Flash Memory: 256 MB
  • Standard Memory: 1 GB
  • Memory Card Supported: CompactFlash (CF) Card
  • Memory Technology: DRAM
  • Maximum Memory: 2 GB

Power Description

  • PoE (RJ-45) Port: Yes
  • Input Voltage:
    • 110 V AC
    • 220 V AC
  • Power Source: Power Supply

Network & Communication

  • Ethernet Technology: Gigabit Ethernet
  • Network Technology: 10/100/1000Base-T

Full specifications (PDF)


The Cisco CISCO3945E/K9 is also known as CSC-CISCO3945EK9 or CISCO3945EK9 .