StarTech 1 Port RS232 Serial-to-IP Ethernet Device Server
StarTech Device Server: Picture 1 thumbnail
StarTech Device Server: Picture 2 thumbnail
StarTech Device Server: Picture 3 thumbnail
StarTech Device Server: Picture 4 thumbnail
StarTech Device Server: Picture 5 thumbnail
StarTech Device Server: Picture 6 thumbnail
See all StarTech items

StarTech 1-Port RS232 Serial-to-IP Ethernet Device Server

SKU: STNETRS2321P MFR: NETRS2321P
(9)Ask a Question
$180.99
Earn VIP Reward Points

Key Features

  • Easily connect RS232 serial devices to your IP Ethernet network using this device server.
  • Use as a reliable serial terminal server, extending RS232 devices over your local IP network.
  • This serial-to-IP adapter supports multiple protocols like TCP/IP, UDP, and DHCP for versatile use.
  • Enjoy broad OS compatibility, including Windows 10, Server 2012, and legacy systems with this server.
  • With included DIN rail kit, mount your serial device server for efficient space management.
  • Get peace of mind with a 2-year warranty on this durable aluminum Ethernet device server.
See More Product Details
Temporarily On Backorder?Expected Availability: 12/2025Request assistance or get notified
Free Shipping

See Options

1
Add to ListGet Sale Alert

Add Adorama Protect:

Available to U.S. customers only.
1-Year Adorama Protect$14.99
2-Year Adorama Protect$24.99
3-Year Adorama Protect$34.99

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

2022-09-18T20:00:00

Rated 5 out of 5

Best RS232 over IP in the Business !!!

I have used and tried several SERIAL over IP Ethernet devices and Startech RS2321P Coupled with their Setup software and VCOM virtual comport software for Windows makes this Hands Down best Available for the price ,, Fast, easy setup and configuration, had this up and running within 5 minutes, no lie, ,, if you need a RS232 Serial connection in the field that you can access with your tools from your office well this is it ,, the easiest and quickest on the market !! Thank you Startech you've helped us out again !!

TechGuy_Steven

2020-09-21T20:00:00

Rated 1 out of 5

Nothing in setup changes the arguments for serial.

I have this setup to a US Robotics modem, and use Putty to telnet to port 100 of the serial server. The Web-UI has the baud rate locked at 115200-8N1. However, the modem keeps reporting the speed being locked at 9600, no matter what baud rate I put in the WebUI. I mean, I can deal with 9600, but still, I'd expect the WebUI to change the argument if it's an option.

acadiel

2020-09-10T20:00:00

Rated 1 out of 5

Very Disappointed

I bought this device because the locations I'll be using in have a POE port but not a power receptacle. There's no excuse for why other very similar devices are supported by Windows 10, but not this device. I had to buy 3rd party software to use this device in my application. Once I found software that can work with this device, it does exactly what I needed it to do.

FrankB

2019-11-10T19:00:00

Rated 5 out of 5

Works really well

I had an issue with the first adapter, I could not update the firmware. But customer support was beyond excellent, and a new adapter was shipped to me. The adapter works right out of the box, and setup was easy and straight forward.

LA9AKA

2019-10-21T20:00:00

Rated 5 out of 5

Easy to use and install

Worked out of the box connecting it to an alarm system.

ryan2019

2017-10-19T20:00:00

Rated 1 out of 5

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.

Stealthsingh

2017-07-26T20:00:00

Rated 1 out of 5

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.

Stephen

2016-07-07T20:00:00

Rated 1 out of 5

Doesn't work with today's operating systems.

Can't use with Windows 7 or 10. Only works with older, unsupported operating systems.

Chris P.

2016-04-20T20:00:00

Rated 4 out of 5

Over all device works well.

This worked well for us. The instruction could be better. But if you have setup IP addresses before the web tool is very easy to use.

John02

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Malfunction Protection

Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.

Browse our FAQ

See Terms & Conditions

StarTech Device Server Specifications

  • Interface

    Serial

  • Ports

    1

  • Auto MDIX

    Yes

  • Compatible Networks

    10/100 Mbps

  • Data Bits

    5, 6, 7, 8

  • Flow Control

    RTS/CTS, None

  • Max Baud Rate

    460.8 Kbps

  • Parity

    Even, Odd, None

  • Serial Protocol

    RS-232

  • Stop Bits

    1, 1.5, 2

  • Supported Protocols

    DHCP, TCP/IP, UDP, HTTP, ICMP, ARP, Telnet

  • External Ports

    1 - DB-9 (9 pin; D-Sub) Male
    1 - RJ-45 Female

  • OS Compatibility

    Windows 10 (32/64), 8 / 8.1 (32/64), 7 (32/64), Vista (32/64), XP (32/64), 2000
    Windows Server 2012, 2008 R2, 2003

  • LED Indicators

    1 - Ready
    1 - Link / Act
    1 - Tx / Rx

  • Center Tip Polarity

    Positive

  • Input Current

    0.36 A

  • Input Voltage

    100 - 240 AC

  • Output Current

    1.6 A

  • Output Voltage

    12 DC

  • Plug Type

    M

  • Power Source

    AC Adapter Included

  • Humidity

    0-90% RH (Non-condensing)

  • Operating Temperature

    0 to 60 deg. C / 32 to 140 deg. F

  • Storage Temperature

    -10 to 70 deg. C / 14 to 158 deg. F

  • Enclosure Type

    Aluminum

  • Certifications

    RoHS Complaint
    CE
    FC

  • Dimensions (H x L x W)

    0.9 x 3.4 x 2.1" / 2.29 x 8.64 x 5.33cm

  • Weight

    3.2oz / 90.72g

  • UPC Code

    065030851459

About StarTech Device Server

FEATURED REVIEWS

Works really well

By LA9AKA

I had an issue with the first adapter, I could not update the firmware. But customer support was beyond excellent, and a new adapter was shipped to me. The adapter works right out of the box, and setup was easy and straight forward.

Best RS232 over IP in the Business !!!

By TechGuy_Steven

I have used and tried several SERIAL over IP Ethernet devices and Startech RS2321P Coupled with their Setup software and VCOM virtual comport software for Windows makes this Hands Down best Available for the price ,, Fast, easy setup and configuration, had this up and running within 5 minutes, no lie, ,, if you need a RS232 Serial connection in the field that you can access with your tools from your office well this is it ,, the easiest and quickest on the market !! Thank you Startech you've...

View full Review

This 1-port serial device server is an effective serial-over-IP solution that lets you connect to, configure and remotely manage an RS232 serial device over a LAN (Local Area Network).

• Rugged aluminum housing delivers reliable performance
• Fast, 460.8Kbps baud rate
• Mounts to a surface or on a DIN rail, with a built-in mounting bracket and included DIN rail clips
• Supports Telnet, for OS independent communication, perfect for Windows, Mac and Linux users
• Configurable using the software utility (Windows only) or web browser
• Supports DHCP, HTTP, ICMP, ARP, IP, UDP, TCP
• Compliant with IEEE 802.3 and IEEE 802.3u standards

Access Your Serial Devices Remotely
The versatile device server is designed to function seamlessly with your integrated serial ports, while offering baud rates faster than many other device servers (up to 460.8Kbps).The device server provides the tools you need to communicate with remote RS-232 devices as if they were directly connected.

Flexible Setup and Operation
It offers versatile browser-based or Virtual COM port software configuration for customizing the device to suit your application. Plus, the software communicates directly with the device server, so it can be used in Virtual Machine (VM) environments if you have multiple VMs sharing the same set of hardware. The device server also offers remote Telnet configuration and support for IP, HTTP, ICMP, DHCP, ARP, TCP and UDP protocols.

Aluminum Housing Provides Durability You Can Count On
With a sturdy aluminum housing and DIN rail or surface mounting brackets, the serial device server provides a durable remote serial interface for industrial automation, security, Point of Sale and many other applications. The NETRS2321P is backed by a StarTech 2-year warranty and free lifetime technical support.

Advantage
• Access a serial device from anywhere with an IP-based connection
• Mount on DIN-rails or on a wall with the attached mounting brackets
• Suitable for harsh environments with a rugged, aluminum enclosure

Applications
• 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)

Warranty Information

This product has a limited warranty of 24 months.

Join VIP PRO

Earn 2X Points + Exclusive Perks!

Sell or Trade your Gear

Get started in 3 easy steps

Key Features

  • Easily connect RS232 serial devices to your IP Ethernet network using this device server.
  • Use as a reliable serial terminal server, extending RS232 devices over your local IP network.
  • This serial-to-IP adapter supports multiple protocols like TCP/IP, UDP, and DHCP for versatile use.
  • Enjoy broad OS compatibility, including Windows 10, Server 2012, and legacy systems with this server.
  • With included DIN rail kit, mount your serial device server for efficient space management.
  • Get peace of mind with a 2-year warranty on this durable aluminum Ethernet device server.

What's in the box:

  • StarTech 1-Port RS232 Serial-to-IP Ethernet Device Server
  • DIN Rail Kit
  • Universal Power Adapter (NA/EU/UK/AU)
  • Software CD
  • Instruction Manual
  • StarTech 2 Year Warranty