Digi International EZ32-A200 32-Port RS-232 Serial Device Server
The Digi International EZ32-A200 is a 32-port serial device server designed to bridge legacy RS-232 equipment into modern Ethernet and 10 Gigabit Ethernet networks. This rack-mountable unit eliminates the need to replace functional serial-based infrastructure—PLCs, annunciators, card readers, environmental monitors, access panels, and other serial peripherals connect directly to centralized IP networks for remote management, monitoring, and data collection without hardware replacement or costly system rewrites.
Key Features
- 32 RS-232 Serial Ports: Each port configurable for data rates 300 bps to 921.6 kbps. Eliminates point-to-point serial wiring and supports legacy device consolidation across multiple buildings or floors onto a single network connection.
- 10 Gigabit Ethernet Connectivity: (2) 10/100/1000 Mbps auto-sensing Ethernet ports. Provides future-proof network uplink capacity and supports high-density serial polling without bottlenecks.
- Dual AC Power Input: Redundant power supplies with automatic failover. Ensures continuous uptime in mission-critical industrial environments where serial device loss triggers operational downtime.
- Industrial Operating Temperature Range: Rated for harsh deployment sites including outdoor enclosures, mechanical rooms, and uncontrolled environments. No active cooling or climate control required.
- Rack-Mountable Form Factor: Standard 1U or 2U mounting. Centralizes serial infrastructure in existing data closets or network racks alongside NVRs, switches, and access control equipment.
- 256 MB RAM, 4 GB Flash: Onboard memory supports concurrent session management across all 32 ports. Flash storage enables firmware updates and configuration persistence across power cycles.
- 1-Year LifeCycle Assurance: Manufacturer warranty covering defects and replacement. Extended support options available for long-term industrial deployments.
The EZ32-A200 solves a common integration challenge: legacy serial devices often outlast the point-to-point cabling and dedicated serial ports that originally connected them. Rather than decommission functioning equipment, organizations can consolidate serial infrastructure onto standard IT networks. This approach reduces physical cabling labor, simplifies remote diagnostics, and enables software-driven device polling and logging without replacing hardware.
Network integration is straightforward. The device supports both raw TCP/IP socket connections and serial protocol tunneling, allowing any application or monitoring tool that speaks TCP to communicate with serial devices across the LAN or WAN. Dual Ethernet ports enable redundant network paths or load balancing on high-capacity deployments. Firmware updates are pushed remotely, and configuration changes can be made through a web interface or command-line API without physical access to the device.
Real-world deployments span security (legacy card readers and door sensors), building automation (HVAC controllers, power meters, fire panels), industrial automation (equipment sensors, process controls), and telecommunications infrastructure. The 10G uplink is particularly valuable in dense environments where dozens of serial devices share a single network connection; backward compatibility with 100 Mbps and 1 Gbps networks ensures the device integrates into existing infrastructure without requiring network hardware replacement.
The industrial operating temperature rating and dual power input make this device suitable for outdoor cabinets, unheated mechanical rooms, and environments where standard commercial IT gear would fail. Weight of 11.6 lbs keeps mounting simple in existing racks. The 5-year warranty period indicates manufacturer confidence in long-term reliability and reflects the device's design for multi-decade serial infrastructure lifecycles.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the Digi EZ32-A200 in well over a hundred site conditions ranging from data centers to outdoor telecom cabinets, and it consistently performs the unglamorous but essential job of keeping legacy serial infrastructure alive without major renovation. The reality of legacy device bridging is that you're almost never migrating everything at once—you have three card readers that speak RS-232, a building management system on serial, maybe an old access panel that nobody wants to touch. The EZ32-A200 gives you a single, rack-native appliance that consolidates all of that onto Ethernet without software rewrites or parallel infrastructure. The 10G uplink is future-proof; you won't outgrow it on serial polling, even in dense environments with 200+ devices across multiple servers. Dual power is non-negotiable in any industrial or critical-uptime setting. The one caveat: if your serial devices require unusual baud rates or exotic flow control, test in advance. Most standard industrial equipment (Modbus, legacy VMS serial outputs, HVAC controllers) works out of the box, but custom or proprietary protocols occasionally need firmware tweaks or vendor consultation.
Technical Highlights:
- 32 Concurrent RS-232 Sessions: Each port independently addressable over TCP. In practice, this means you can poll or control 32 disparate serial devices from a single network socket per device—eliminates the operational burden of managing point-to-point serial runs and makes remote diagnostics trivial.
- 10G Ethernet with Auto-Sensing Fallback: The (2) 10/100/1000 Mbps ports adapt to legacy switches. Uplink capacity is future-proof even if you're initially connecting to a 1 Gbps infrastructure; you can upgrade the switch without touching the device.
- Dual AC Power with Automatic Failover: Redundancy is built-in, not bolted on. If one AC circuit is lost, the device continues operating seamlessly. This is the difference between a maintenance window and zero downtime in a critical facility.
- Industrial Temperature Tolerance: Eliminates the need for climate-controlled enclosures. We've deployed units in unheated outdoor cabinets and mechanical basements where standard Ethernet gear would overheat or fail within months.
- 256 MB RAM, 4 GB Flash: Sufficient for session persistence and configuration state. The flash allows firmware updates and custom configurations to survive power loss, which matters when the device is in a location that's difficult to physically access.
Deployment Considerations:
- Serial device polling over IP introduces latency compared to local serial connections. If your application has hard real-time constraints (sub-millisecond response), verify actual throughput in a pilot before rolling out to production. For most legacy devices (card readers, environmental sensors, older PLCs), the overhead is imperceptible.
- Dual Ethernet ports should be cabled to separate switches or VLAN trunks if redundancy is a requirement. A single switch failure will still isolate both ports on most consumer-grade switches—plan your network topology accordingly.
- Configuration is web-based or CLI. Ensure your network operations team has IP access to the management interface; if the device is behind a firewall, coordinate with network security to allow administrative traffic. Most integrators use a private management VLAN or out-of-band access port.
- RS-232 cabling runs should terminate in a patch panel or distribution block near the device to keep serial wiring organized and to minimize EMI from long cable runs in noisy industrial environments. Proper grounding reduces ground-loop hum on sensitive serial streams.
- Firmware updates are released periodically. On a 5-year lifecycle, plan for at least 2-3 updates. Keep a console connection or OOB access method available so you can recover if an update stalls—rare, but it happens.
This device is the right choice when you have legacy serial infrastructure that's functional but geographically dispersed or difficult to manage locally, and you need to consolidate it onto a modern network without replacing working equipment. Consider the Digi EZ32-A200 as the bridge that buys you 5-10 more years of operational life from devices that would otherwise require immediate capital replacement. Explore the full range of Digi serial and industrial networking solutions in the Digi International catalog.
