1 Port RS232 Serial Ethernet Device Server - PoE Power Over Ethernet

Connect to, configure and remotely manage an RS-232 serial device over an IP network

Product ID: NETRS2321POE

  • Supports standard Ethernet or Power over Ethernet (POE)
  • Supports UDP, IP, TCP, ICMP, HTTP, DHCP and ARP-Ping protocols
  • Wall mountable
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  • Integrated 10/100Mbps RJ45 LAN port
  • Data transfer rates of up to 115.2 Kbps per port
  • Supports Auto Crossover (MDI/MDI-X)
  • Support for Windows® 2000, XP 32bit, and Vista 32bit
$205.99 CAD
108+ In stock
In stock
CA: 8 | US: 100
In stock
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The NETRS2321POE 1 Port RS232 Serial Ethernet Device Server - PoE (Power Over Ethernet) allows you to install your RS232 devices anywhere on your TCP/IP Ethernet WAN/LAN, and access them as if they were right beside you - even over the Internet!

The Serial Device Server is designed to function seamlessly with your other integrated and add-on serial ports as if they were right inside your computer. Perfect for industrial automation, security, Point of Sale, or any long-range serial application, delivering reliable performance in any environment.

The Ethernet/serial device server supports PoE (Power over Ethernet) when connected to a PoE compliant device - eliminating the need for an external power supply and outlet, and making it easier to situate the device server as needed.

Backed by a 2-year warranty and free lifetime technical support.

The Advantage

  • PoE support gives you the freedom to situate your serial device where it is needed even when no power outlet is available
  • IP-based connection to your serial devices allows remote administration from anywhere; even over the Internet
  • Remotely connect to multiple NETRS2321POE units with a single PC for simple and efficient management of devices from a single location


Manufacturing (CNC machinery, process control equipment, bar code scanners, serial printers)

Security (UPS control, access key panels, video cameras, card readers)

Environmental Control (lighting, temperature, clocks)

POS (credit/debit card readers, receipt printers, bar code scanners, cash registers, scales)

Hospital (monitoring equipment, nurses' stations)

Hotel Front Desk (serial printers, bar code scanners, keyboard, mouse, receipt printer, credit/debit card reader)

Hospitality/Restaurant (credit card/debit card reader, serial printers)

Technical Specifications

Warranty Information
Warranty 2 Years
Industry Standards IEEE 802.3af Power-over-Ethernet
Data Bits 6, 7, 8
Maximum Data Transfer Rate 115.2Kbps
MTBF 233,403 Hours
Stop Bits 1, 2
Supported Protocols UDP, IP, TCP, ICMP, HTTP, DHCP, ARP-Ping
Connector Type(s) 1 - DB-9 (9 pin, D-Sub) Male
1 - RJ-45 Female
OS Compatibility Windows® Vista (32), XP (32), 2000
Special Notes / Requirements
Patents and Licenses The following patents are licensed for this product. This list might not be all inclusive.
• United States Patent No. 5,406,260 (expired)
• United States Patent No. 6,650,622
• United States Patent No. 7,457,250
• United States Patent No. 8,155,012
• United States Patent No. 8,902,760
• United States Patent No. 8,942,107
• United States Patent No. 9,019,838
• United States Patent No. 9,049,019
• United States Patent Application No. 14/695,456
• United States Patent Application No. 14/726,940
LED Indicators 3 - Heartbeat, Link/Activity, 10/100 Mbps
Center Tip Polarity Positive
Input Current 0.3 A
Input Voltage 110V-240V AC
Output Current 0.1A
Output Voltage 12 DC
Plug Type M
Power Consumption (In Watts) 1.2
Power Source AC Adapter Included
Humidity 5~95% RH
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Physical Characteristics
Color Black
Enclosure Type Aluminum
Product Height 1 in [25.4 mm]
Product Length 4.2 in [107 mm]
Product Weight 9.1 oz [259 g]
Product Width 2.6 in [66.3 mm]
Packaging Information
Shipping (Package) Weight 34 oz [963 g]
What's in the Box
Included in Package 1 - Industrial Serial over IP Device Server
1 - Universal Power Adapter (NA/UK/EU)
1 - Driver CD
1 - Instruction Manual


View full OS compatibility
Windows® Vista (32), XP (32), 2000



1 Port RS232 Serial Ethernet Device Server - PoE Power Over Ethernet

Customer Reviews

1 (3 reviews)
1 out of 5 stars
Quality of Product
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1 - 3 of 3 Reviews

(1 star) Does not support win7/10

Just bought it, needed a poe rs232. This fit the bill, made the wrong assumption that it would be supported on newer OS Needless to say, I am not happy at my laziness.
Comment Helpful? Yes - 2 No - 0 Report

(1 star) Device not seen by Startech DS-Tool software

We use a StarTech NETRS42348PD device with their DS-Tool software (V1.2) and expected that this device would be seen by that software. It is not, and as such is of no use to us because we run Windows 7 or higher. This oversite should be corrected by StarTech.
Comment Helpful? Yes - 0 No - 0 Report
Response from
Brian, Customer Support
Hi, Thanks for your feedback and review. If you used the DS-Tool software and it was not successful in finding the unit. Please try the following - Directly connect the product with a network cable to a computer - Assign that computer a static IP address on the same subnet (Ex - Open the DS-Tool software and configure the unit or access the web interface using We hope this helps. If it does not, or you have any concerns, please reach out to our Technical Advisors by clicking "Support" at the top of our website. Thank you.

(1 star) Doesn't work with today's operating systems.

Can't use with Windows 7 or 10. Only works with older, unsupported operating systems.
Quality of Product (3/5)
Comment Helpful? Yes - 4 No - 0 Report
Response from
Barry, Customer Support
Hello Chris, Thanks for reaching out. You are correct. This device only supports Windows 2000, XP & Vista. Due to the age of this device, updating to support Windows 7 through Windows 10 was not possible. We do however offer a newer model, the NETRS2321P. This model offers OS support from Windows 2000 through Windows 10, as well as Server OS support, 2003 through 2012 R2. It however, does not support POE. If POE is a requirement in your setup, have a look at our POE injectors such as the POEINJ1G. Should you need anything else, please reach out to our technical advisors at Thank you,