StarTech.com 1-Port Serial to Ethernet Adapter — 802.3af PoE Powered Serial Device Server

Upgrade your legacy RS232 installations with a modern, IP-based solution designed for reliable, scalable connectivity. The StarTech.com 1-Port Serial to Ethernet Adapter transforms a single RS232 serial port into an accessible, networked device server, enabling seamless control, data collection, and integration of serial equipment across LANs and WANs. This compact, feature-rich adapter is built for industrial environments, healthcare setups, data centers, and point-of-sale networks where remote access to serial devices is essential. By supporting the 802.3af PoE standard, it delivers both data and power over a single Ethernet cable, simplifying installations, reducing cable clutter, and enabling flexible placement near the equipment it serves. With wall-mount and DIN rail mounting options, you can deploy this device in tight spaces, behind panels, or inside equipment racks without interrupting operations. Whether you’re integrating PLCs, barcode scanners, medical devices, or lab instrumentation, this StarTech serial device server delivers dependable performance and straightforward configuration that IT staff and operators can rely on.

• Seamless RS232 to Ethernet bridging: Converts a single RS232 DB9 serial port into a network-accessible device server, enabling remote access, monitoring, and control of serial equipment over an IP network. This bridge preserves the integrity of serial signals, baud rates, data formats, and handshakes, ensuring compatibility with a wide range of legacy devices while exposing them to modern management tools. With IP-based connectivity, you can centralize data collection, remotely restart devices, and integrate serial gear with enterprise applications, SCADA systems, and cloud-based monitoring platforms.
• 802.3af PoE powered: Power and data are delivered over a single Ethernet cable using PoE (Power over Ethernet) compliant with the 802.3af standard. This eliminates the need for a local power adapter near the serial device, reduces cabling complexity, and enhances reliability in crowded network environments. The PoE capability supports easy deployment in spaces where power outlets are scarce, and it pairs well with PoE-enabled switches and injectors already deployed in data centers or industrial facilities.
• Flexible mounting options for space-constrained deployments: The adapter is designed for versatile installation, with wall-mount and DIN rail mounting compatibility. Install behind cabinets, on walls in equipment rooms, or within industrial enclosures without occupying valuable rack space. The rugged, compact form factor makes it suitable for industrial automation, manufacturing floors, labs, and hospitality environments where clean, organized cabling and secure placement matter. Mounting versatility helps you optimize airflow, reduce cable strain, and simplify future maintenance or relocation.
• RJ45 LAN to DB9 serial interface for broad compatibility: The device provides a straightforward bridge from a standard RJ45 Ethernet network to a DB9 RS232 serial port, enabling reliable communication with a broad spectrum of serial devices—from PLCs and sensors to printers and medical instruments. By using familiar network infrastructure, you can deploy scalable serial access across multiple sites, implement centralized monitoring, and leverage IP-based management tools without modifying the serial devices themselves. The result is a flexible, future-ready solution that respects existing serial workflows while unlocking new measurement, control, and automation capabilities.
• Compact, durable design built for demanding environments: The StarTech 1-Port Serial to Ethernet Adapter emphasizes reliability in busy IT and industrial settings. Its compact enclosure fits into tight spaces, while the durable construction minimizes interference and supports steady operation in environments subject to vibration, temperature fluctuations, or electromagnetic noise. The device’s straightforward configuration and management interface streamline setup, ongoing maintenance, and troubleshooting, helping teams accelerate deployment, minimize downtime, and keep critical serial workflows running smoothly.

Technical Details of StarTech.com 1-Port Serial to Ethernet Adapter

• Serial Port: 1 x DB9 RS232 serial interface (1-port serial device server)
• Network Interface: 1 x RJ45 Ethernet port (LAN)
• Power: 802.3af Power over Ethernet (PoE) powered
• Mounting: Wall-mount and DIN rail compatible for flexible deployment
• Device Type: Serial device server / RS232 to Ethernet bridge
• Network Protocols: IP-based networking with TCP/IP compatibility for remote access and management

How to install StarTech.com 1-Port Serial to Ethernet Adapter

• Plan your installation by choosing a mounting location that provides easy access to both the RS232 device and the Ethernet connection. Ensure the chosen spot allows for clean cable routing and adequate ventilation. The wall-mount or DIN rail options give you flexibility to fit the adapter into crowded racks or behind equipment panels.
• Mount the unit securely using the included hardware for your chosen mounting method. Confirm the unit is firmly attached and stable to prevent cable strain or accidental disconnections during daily operations.
• Connect the RS232 device to the adapter’s DB9 serial port using an appropriate DB9 serial cable. Ensure the RS232 device is configured with compatible serial settings (baud rate, data bits, parity, stop bits) to avoid communication errors.
• Connect the Ethernet network: plug one end of an Ethernet cable into the RJ45 port on the adapter and the other end into your PoE-enabled switch, router, or injector. If your network provides PoE, the adapter will receive power along with data from the same cable; otherwise, connect a PoE-capable power source as required.
• Configure network and serial settings: access the device management interface (web UI or management utility) to assign a static IP address or enable DHCP, set the subnet mask, and configure the serial port parameters to match your RS232 device (baud rate, data bits, parity, stop bits). Ensure correct flow control and any required handshake signals are selected to match your equipment’s requirements.
• Test connectivity and functionality: establish a test session from a management workstation or application to communicate with the RS232 device over the network. Verify that data is transmitted correctly, timing is within acceptable margins, and any control commands or responses are received reliably. If needed, adjust network settings, firewall rules, or MTU values to optimize performance for your environment.

Frequently asked questions

• Q: How many serial ports does this device provide?

  A: It provides a single RS232 DB9 serial port to connect one serial device over Ethernet.

• Q: Does it require a PoE-enabled switch or injector?

  A: Yes. The adapter is PoE powered (802.3af), so you can power it from a PoE-enabled switch or injector using a single Ethernet cable.

• Q: Can I mount it on a DIN rail?

  A: Yes. The unit supports DIN rail mounting as well as wall mounting for flexible deployment in a variety of environments.

• Q: Is remote access possible over the Internet?

  A: Yes, when connected to an IP-based network, you can access the RS232 device remotely via the network, subject to your security policies and firewall configurations.

• Q: What kinds of devices are compatible?

  A: The adapter is designed to work with a wide range of RS232 devices, including industrial controllers, barcode scanners, POS terminals, medical equipment, and laboratory instruments that rely on RS232 communication.