Opengear CM4148-SAC-US 48 port console server

OpenGear OpenGear


48 x RS-232 RJ45 serial (Classic pinout) & 1 x DB9 local console, single AC power supply, 1 x 10/100 Ethernet, 16MB internal flash storage

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  • Remote management for serial console ports, network hosts, UPS and PDUs from one single interface
  • Low cost and efficient, Low power consumption
  • Enterprise grade security compliance with data center access and security policies
  • Programmable open solution

 CM4100 Console Servers

The Opengear CM4100 is the most efficient console server at the lowest cost available today. In one secure package, we have developed an out-of-band management solution for serial console ports, servers, virtual servers, service processors, UPS & PDUs, environmental monitoring and more. The CM4100 family of console servers enables system administrators to securely access and control their data centers and networks from anywhere in the world.

Secure Console Management

The CM4100 is available in 16, 32 and 48 port models that provide reliable and secure access to the serial console ports on routers, switches, servers, firewalls, PDUs, UPS and more. Features such as embedded AJAX terminal, pattern-match alerting and event notification help reduce downtime and expedite problem resolution. Powered by a robust Linux core, the CM4100 open source platform enables users to embed custom scripts, custom alerts and embed security agents.

Remote Out-Of-Band Access

The CM4100 console server can be remotely accessed in-band through 10/100 TCP/IP or out-of-band through an external modem. All connections are secure to remote systems using robust advanced encryption. Access can be restricted by IP address, password or account. Administrators can securely control and manage their distributed networks of servers and appliances using the latest in console access.

High Availability

  • AC power supplies (single input)
  • 10/100 Ethernet with auto failover or additional out-of-band broadband connection

Security and Authentication

  • Secure Shell (SSH V2)
  • TACACS+, RADIUS and LDAP authentication
  • Local authentication
  • System event syslog
  • SSH port and IP forwarding support
  • IP packet filtering
  • Unlimited user accounts

Serial Console Port Management

  • Free COM Port Redirector software
  • SSH tunneled serial bridging
  • Windows 2003 Server ACS and EMS support
  • SUN / Solaris ready (no inadvertent breaks)
  • Break over SSH support
  • Port triggers with SMNP and email alerts
  • Offline data logging (syslog, NFS, CIFS)
  • Online data buffering and logging
  • Multiple users per port (with port sniffing)
  • Access by TCP port
  • Telnet / Unauthenticated Telnet SSH/Raw TCP connect
  • RFC 2217 - Port Redirection
  • Windows Remote Desktop or VNC over serial support
  • Clustering - single IP for multiple IM4200 and CM4000 devices
  • Per serial port user access lists

LAN Console Port Management

  • Secure SSH tunneling (TCP/UDP applications)
  • Secure Remote Desktop access to Windows XP/2003
  • Secure VNC access to Sun/Windows /Linux computers
  • Secure HTTP(S) access to browser controlled appliances
  • Native IPMI 1.5 and 2.0 (RMCP/RMCP+) support for BMC and service processor access and control
  • Secure SOL (Serial over LAN) access to BIOS, EMS and ACS
  • Service processor access (IPMI, ILO, LOM and more)
  • Access to KVM built in to service processors (DRAC, RSA)
  • Secure Telnet access
  • Limit user access by LAN device and SDT service for that device
  • Port triggers with SMNP and email alerts for all tunnel traffic
  • Each gateway can port forward to an unlimited number of locally networked hosts (computers, routers)
  • No limit on number of hosts being concurrently accessed through the one tunnel
  • Up to 50 concurrent SSH sessions (SDT tunnels) can be open at the one time
  • No limit on number of clients who can access the one gateway
  • Embedded DHCP server for management LAN devices

Power Management

  • Network UPS Tools for UPS Monitoring and Management
  • PowerMan for PDU and RPS Management
  • Hotkey for in session power menu

System Management

  • Secure web management (HTTPS)
  • Local browser management (HTTP)
  • Command Line interface (Linux Shell)
  • Nagios distributed monitoring
  • ARP-Ping (IP address assignment)
  • SNMP


  • In-band (local Ethernet or secure tunnel over Internet)
  • Out-of-band (dial-up modem access) included
  • Additional Ethernet for broadband out-of-band connection
  • Local serial console access

Other Protocols Supported

  • DHCP client for dynamic IP assignment
  • NTP for time synchronization
  • PPP for dial-up access
  • NAT port redirection


  • Flash upgradeable
  • Free upgrades from online FTP site
  • HTTP, FTP, TFTP client for file transfer

Operating System

  • Linux with source code access and Custom Development Kit (CDK)


  • 16, 32 or 48 RJ45 RS-232 serial ports (50 to 230,400bps)
  • 1 DB9 RS-232 local console and modem serial port (50 to 115,200 bps)
  • 1 RJ45 10/100Base-T Ethernet port 


  • Internal 100-240V AC, 50/60 Hz or
  • Power consumption less than 20W

Dimensions and Weight

  • 17 x 8.5 x 1.75 in - 9 lbs
  • 44 x 21 x 4.5 cm - 3.6 kg
  • 1RU with rack mounts


  • Ambient operating temperature: 5°C to 50°C (41°F to 122°F)
  • Non operating storage temperature: -30°C to +60°C (-20°F to +140°F)
  • Humidity: 5% to 90%


  • UL 1950
  • FCC Part 15 A, CE (EN55022 A, EN55024, EN60950)
  • TUV, C-Tick, RoHS compliant

Electromagnetic Emissions:

  • EN55022: 1998 +A1:2000+ A2:2003
  • FCC Part 15, Subpart B, Class A

Electromagnetic Immunity:

  • EN55024: 1998 +A1:2001 +A2:2003 Immunity Characteristics
  • IEC61000-4-2: 1995 Electro-Static Discharge Test
  • IEC61000-4-4: 1995 Electrical Fast Transient Test
  • IEC61000-4-5: 1995 Power Supply Surge Test


  • UL 60950-1:2003 
  • CAN/CSA-C22.2 No. 60950-1-03


  • 166MHz ARM (Micrel KS8695P) 


  • CM4148: 64MB SDRAM 16MB Embedded Flash

Operating System

  • Linux with source code access and Custom Development Kit (CDK)

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Opengear CM4148-SAC-US 48 port console server

Opengear CM4148-SAC-US 48 port console server

48 x RS-232 RJ45 serial (Classic pinout) & 1 x DB9 local console, single AC power supply, 1 x 10/100 Ethernet, 16MB internal flash storage