Best Computer Networking Device Servers (2026 Guide)
We prioritized products with high aggregated ratings and review volume, representative brand coverage, varied port counts, and explicit serial/network feature sets
The Verdict
- Best Overall: Lantronix Uds-10 Device Server with DB25 and RJ45 — Best for simple DB25 serial setups: compact one-port device server with a legacy DB25 interface for basic networked serial needs
- Best Premium: StarTech 1-Port Serial to IP Adapter for RS232 devices — Best for RS232 DB9 adapters: compact 1-port serial-to-IP adapter designed for easy integration of DB9 RS232 devices
This roundup highlights top-rated computer networking device servers suitable for connecting serial equipment to Ethernet in industrial and IT environments. Selections were made by aggregating product ratings and review volume, emphasizing widely used brands, port configurations, and protocol support
Top Picks
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1
Best Overall Lantronix Uds-10 Device Server with DB25 and RJ45
Best for simple DB25 serial setups: compact one-port device server with a legacy DB25 interface for basic networked serial needs
Lantronix Uds-10 device server featuring embedded software, ROM flash for upgrades, and flexible IP protocol stack. Power via serial or barrel connector with 128-bit encryption for secure communications
- embedded device server
- upgradable firmware
- secure 128-bit encryption
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2
NPort 5110 1-Port Serial Device Server, 10/100 Ethernet, RS232
Best for single RS-232 links: reliable 1-port serial device server offering 10/100 Ethernet and straightforward TCP/IP connectivity
Compact serial device server with 10/100 Ethernet and RS232 support. Features real COM/TTY drivers for Windows and Linux and multiple configuration options via Telnet, web, or Windows utility. Customer insight indicates balanced expectations from users
- 1-port RS232 device server
- built-in SNMP MIB-II support
- web/Telnet/Windows utility configuration
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3
Lantronix xDirect Serial-to-Ethernet Device Server XDT2321002-01-S
Best for mixed serial protocols: versatile serial-to-Ethernet unit that supports RS-232/422/485 for diverse device connections
Serial-to-Ethernet device server enabling RS232/RS422/RS485 connectivity. Includes 10Base-T/100Base-T interfaces and DB9F DCE pins. Customer notes provide mixed insights but no specific sentiment
- serial-to-ethernet bridge
- auto-sensing Ethernet ports
- DCE DB9F interface
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4
Lantronix 1-port Secure Serial to IP Device Server
Best for secure serial tunneling: one-port serial-to-IP server with built-in encryption and secure remote access features
Compact 1-port serial-to-Ethernet device server with rs232/rs422/rs485 support and up to 256-bit AES encryption. PoE 802.3af + integrated HTTP server for remote management. Customer note: secure, plug-and-play serial-to-ip conversion
- 256-bit AES encryption
- PoE 802.3af support
- modbus tcp/rtu support
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5
UDS1100 One-Port Serial to IP Device Server
Best for flexible serial networking: one-port serial-to-IP device with multi-protocol support for varied serial interfaces
LANtronix UDS1100 converts RS-232/RS-422/RS-485 to Ethernet for remote management. UL864 compliant, wall or rail mountable, with a single serial port and a Fast Ethernet port. Customer insight: none available
- UL864 compliant
- wall/rail mountable
- one DB-25 serial port plus one 10/100 Mbps Ethernet port
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6
Best Premium StarTech 1-Port Serial to IP Adapter for RS232 devices
Best for RS232 DB9 adapters: compact 1-port serial-to-IP adapter designed for easy integration of DB9 RS232 devices
1-port serial-to-IP converter enabling remote RS232 devices over an IP network. Suitable for POS systems, barcode readers, sensors, and PLCs; unified management with a common UI across devices
- serial-to-ip converter
- unified management UI
- DB9 921.6Kbps support
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7
MOXA NPort 5210 2-Port Device Server, 10/100 Ethernet, RS-232
Best for multi-port RS-232 reliability: two-port device server built for stable Ethernet-to-serial connections in professional setups
Compact device server for RS-232 with 10/100 Ethernet. Supports TCP server/client and UDP, plus SNMP MIB-II for network management. 2-port model suitable for simple serial-to-Ethernet use cases
- 2 ports for RS-232
- TCP/UDP socket options
- SNMP MIB-II support
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8
Lantronix 2 Port Serial to IP Device Server
Best for small multi-device deployments: two-port serial server suitable when you need to network multiple serial lines reliably
Two-port serial to IP Ethernet device server for RS232/RS422/RS485 connectivity. Enables remote access of serial devices over Ethernet. Customer note highlights reliable serial control capability
- two-Port serial to IP
- supports multiple serial standards
- LAN/WAN Ethernet connectivity
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9
Industrial Serial to Ethernet Converter RS422/RS485 to TCP/UDP
Best for industrial RS422/485 conversions: rugged serial-to-Ethernet converter focused on RS422/485 field applications
Serial (RS422/RS485) to Ethernet (TCP/UDP) conversion with IPv4/IPv6 dual stack. Includes protection features such as overvoltage, reverse voltage, and overcurrent protection. User insight notes no specific comments
- dual-stack IP support
- serial to Ethernet conversion
- robust protection features
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10
MOXA NPort 5410 4-Port RS-232 Serial Device Server
Best for higher port counts: four-port RS-232 device server that simplifies networking multiple serial devices in automation systems
4-port RS-232 device server with 10/100 Ethernet and multiple socket modes. Enables remote serial communication with network management via SNMP MIB-II and configurable via Telnet/Web/Windows utility. Customer insight: mixed feedback
- 4 RS-232 ports
- 10/100 Ethernet
- SNMP-MIB-II support