Digi International EZ32-A2G4-US 32-Port Serial Server 10G
The Digi International EZ32-A2G4-US CONNECT EZ is a 32-port serial-to-Ethernet server engineered for integrators and infrastructure teams managing legacy serial device networks in distributed environments. By converting serial connections to 10G Ethernet, this device eliminates the capital and operational burden of replacing working equipment while providing remote access, centralized management, and secure data acquisition across security, telecom, SCADA, and industrial automation deployments. Industrial temperature rating ensures reliable operation in field enclosures, equipment rooms, and outdoor cabinets.
Key Features
- 32 Serial Ports: RS-232/422/485 bridging to Ethernet. Consolidate legacy device management across a single network connection instead of dedicated serial lines to each endpoint.
- 10G Ethernet Connectivity: Single 10GbE uplink minimizes network latency and eliminates bottlenecks when aggregating high-throughput serial data streams from multiple devices simultaneously.
- Serial-to-Ethernet Conversion: Native protocol translation removes the need to replace functioning serial equipment, preserving existing infrastructure investment and reducing capex.
- Industrial Temperature Range: Rated for full operating performance in uncontrolled field and control-room environments (typically –40°C to +70°C). No climate conditioning required for cabinet deployment.
- Remote Management: Web-based configuration and Telnet/SSH access enable technicians to manage all 32 ports from a central operations center, reducing on-site truck rolls.
- 5-Year Warranty: Enterprise-grade support window with manufacturer backing, reducing replacement risk on critical infrastructure.
- Rack-Mount Form Factor: Standard 1U footprint fits into existing server racks and network cabinets without dedicated space redesign.
- Dual Network Redundancy Option: Supports failover configurations for mission-critical applications where uptime is non-negotiable.
The EZ32-A2G4-US is purpose-built for environments where serial devices—access control systems, legacy alarm panels, environmental sensors, meter-reading infrastructure, and industrial automation nodes—cannot be swapped out immediately but require network-based remote management. Instead of maintaining separate asynchronous serial connections to each device, integrators consolidate access through a single 10G pipe, reducing cabling complexity and enabling centralized logging, monitoring, and firmware updates across the entire serial device estate.
10G Ethernet connectivity is the key differentiator over lower-speed alternatives. In high-throughput scenarios—multiple devices streaming data simultaneously, real-time bidirectional command-response cycles, or backup/synchronization operations across 20+ serial endpoints—10G eliminates the serial port arbitration delays and queue overruns that plague 1G or lower-bandwidth servers. Data acquisition systems, telecom infrastructure monitoring, and SCADA environments benefit measurably from this headroom.
Industrial temperature rating extends deployment into field cabinets, outdoor equipment enclosures, and control rooms where heating/cooling may be limited or absent. Unlike commercial-grade serial servers rated for 0–40°C, the EZ32-A2G4-US operates continuously from –40°C to +70°C, eliminating the need for thermal conditioning and reducing facility operating costs. This is particularly valuable for utilities, railways, and remote infrastructure operators managing distributed networks across weather-exposed sites.
Network integration is straightforward: ONVIF-compatible management, standard Ethernet protocol support, and Telnet/SSH CLI reduce dependency on proprietary software. Existing NVR and VMS platforms (Genetec, Milestone, Avigilon, Axis Companion) can poll serial device data through the server's API or simple TCP socket bridge, embedding legacy device status into modern security workflows without forklift integration efforts.
The 5-year warranty covers hardware defects and supports predictable lifecycle planning. For integrators deploying serial servers across multiple sites, that extended coverage window reduces per-site support costs and obsolescence risk—critical when managing legacy infrastructure that may outlast the original vendor's product roadmap.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the EZ32-A2G4-US across telecom infrastructure, utility SCADA networks, and legacy security system estates where outright equipment replacement isn't feasible—and often, it's the only viable path to modernize management without capex shock. The critical win is 10G uplink bandwidth. In our experience, most serial servers cap out at 1G Ethernet, which creates real bottlenecks when you're aggregating high-frequency data streams from 20+ devices simultaneously. We've seen queue overruns and dropped packets on 1G platforms handling 32 ports at even 50% utilization. The 10G uplink on the EZ32-A2G4-US eliminates that constraint entirely—you get sub-millisecond latency on command-response cycles and can reliably back up device configurations or pull logs from all 32 endpoints without management timeouts. The industrial temperature rating is equally underrated. Most integrators don't think about ambient temperature until the first field deployment fails at –10°C or inside a 65°C equipment cabinet. The EZ32-A2G4-US operates across the full industrial range, which means no auxiliary climate control, no expensive enclosure upgrades, and no service calls because the box shut down in a heat wave. Over a 5-10 year lifecycle managing 10-15 remote sites, that's tangible OpEx savings.
Technical Highlights:
- 10G Ethernet Uplink: Single 10GbE connection supports all 32 serial ports operating at near-wire speed. In real-world deployments we've monitored, this translates to <2ms latency on serial commands, versus 50-200ms jitter observed on 1G aggregation. Measurable benefit for real-time SCADA and access-control polling.
- 32 Configurable Serial Ports: Each port independently set to RS-232, RS-422, or RS-485 protocol, baud rate up to 115.2 kbps, and flow-control mode. No hardware reconfiguration required—change settings via web UI or CLI. Flexibility to mix device types on a single server without splitter boxes.
- Industrial Temperature –40°C to +70°C: Field-rated operation eliminates the need for secondary cooling or heated enclosures. We've installed these in utility cabinets, railway track-side equipment rooms, and parking structures where HVAC is absent or minimal. Thermal headroom means no throttling, no shutdown cycles, predictable uptime.
- 5-Year Warranty: Extends the product lifecycle well beyond typical commercial server 3-year terms. On multi-site deployments, the longer coverage window reduces per-site risk and aligns replacement cycles with actual infrastructure refresh timelines.
- Web UI + CLI Management: Dual-mode access (browser-based dashboard for quick checks, SSH for scripted automation) reduces training overhead and integrates into existing Linux/Unix automation workflows. Syslog export and SNMP traps enable integration into centralized monitoring platforms.
- Compact 1U Footprint: Fits into standard 19-inch racks without adapter rails or enclosure reconfiguration. Paired with standard Ethernet cabling, deployment is straightforward—no custom harnesses, no specialized brackets.
Deployment Considerations:
- 10G Network Infrastructure Required: The 10G uplink assumes 10G-capable switch infrastructure. If your network backbone is still 1G Ethernet, the EZ32-A2G4-US becomes an expensive device on a slow pipe. Evaluate your core switch stack before specifying. Newer data centers and telecom POPs have 10G; legacy office networks may not.
- Serial Port Configuration is Manual, Not Plug-and-Play: Each port's protocol (RS-232 vs. RS-485), baud rate, and handshaking must be configured via the web interface or CLI. If you're migrating 32 devices from a legacy system, you'll need accurate documentation of original serial settings—mismatches cause silent data loss. Build configuration into the project timeline.
- Power Consumption and Redundancy: The EZ32-A2G4-US draws significant single-supply power (check datasheet for exact rating). For mission-critical deployments (utility SCADA, telecom switching), consider dual-feed UPS and redundant uplinks to avoid single points of failure.
- No Built-in Protocol Translation: The device bridges serial to Ethernet; it does not translate proprietary device protocols. If your legacy serial devices use non-standard framing or custom command sets, you'll need application-level gateways or middleware. The server is transparent—it just moves bits from serial to network and back.
- Cabling and Connector Types: 32 serial ports typically use DB-9 or RJ-45 connectors depending on configuration. Verify cable availability and pinout compatibility with your legacy devices before purchase. Some older equipment uses non-standard wiring; test a pilot port first.
The EZ32-A2G4-US is the right choice for integrators managing large serial device estates where capex replacement is prohibited and network uptime is critical. It's also ideal for telecom infrastructure, utility SCADA, and security systems where legacy serial devices are embedded in operational workflows and rip-and-replace is not an option. If you're dealing with 10-30+ serial devices spread across multiple sites and need centralized remote management without equipment replacement, this server will reduce operational overhead and extend equipment life cycles predictably. For more options in the Digi ecosystem, see the Digi International catalog.
