---
title: Connectivity Solutions > Device Connectivity > SD-300
description: SD-300 is a Wired Serial Device Server that can easily connect and share RS-232 serial devices on wired networks, access, monitor and control equipment.
image: https://www.silextechnology.com/hubfs/SD-300.png
---

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# SD-300

**Wired Serial Device Server**

The Silex SD-300 and SD-310AN are designed to easily connect and share RS-232 serial devices over a wired or wireless network. Industrial automation, building automation, medical devices, security access and control, point of sale devices, LED signs, bar code/label, and other specialty printers, or virtually any other device with a serial port can now be enabled with secure, robust wired or wireless network capability.

- [Download product brief](https://www.silextechnology.com/hubfs/Resource%20PDF/SD-300%20Product%20Brochure%20.pdf)
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![](https://www.silextechnology.com/hubfs/Product%20Images/SD-300.png)

### High-performance serial device

The Silex SD-300 and SD-310AN are designed to easily connect and share RS-232 serial devices over a wired or wireless network. Industrial automation, building automation, medical devices, security access and control, point of sale devices, LED signs, bar code/label and other specialty printers, or virtually any other device with a serial port can be now be enabled with secure, robust wired or wireless network capability. It allows flexibility to place the device anywhere on the network instead of needing to be attached directly to the computer, and multiple computers or terminals can access the serial device.

Features/Benefits

 Easily connect and share RS-232 serial devices on wired networks. Access, monitor and control equipment over Ethernet. It has also got multiple serial port modes for maximum flexibility in any environment.

- Easily connect and share RS-232 serial devices on wired networks
- Multiple Serial Port Modes-
- Serial Port Emulation Mode
- Raw TCP Connection Mode
- Serial data can be tunneled over the network
- Equipped with an autosensing 10/100 Ethernet port

Specifications

- Model number: SD-300
- Wired LAN: 10/100
- Storage: Temperature: -20 ~ + 70 deg C
- Humidity: 20 ~ 90% RH
- Operating Temperature: 0 ~ + 50 deg C
- Humidity: 20% ~ 80% RH (non-condensing)
- Maximum power consumption: 2.25W (DC5V/0.45A)
- Regulatory Compliance
- VCCI Class B, FCC Class B, ICES-003 Class B, CE Class A

Documentation

[SD-300 Setup Guide](https://www.silextechnology.com/hubfs/Resource%20PDF/sd300_Setupguide_eng_xa.pdf?hsLang=en-us)  
[SD-300 Manual](https://www.silextechnology.com/hubfs/Resource%20PDF/sd300_sd320an_manual_eng_xx.pdf)  
[SX-Virtual Link for Serial Setup Guide](https://www.silextechnology.com/hubfs/SX-Virtual%20Link%20for%20Serial%20Setup%20Guide.pdf?hsLang=en-us)  
[NOR Flash Replacement](https://www.silextechnology.com/hubfs/NOR%20Flash%20Replacement.pdf?hsLang=en-us)  
[RMA (Return Merchandise Authorization) Policy](https://www.silextechnology.com/support/warranty-and-return-policy?hsLang=en-us)  
[Declaration of Conformity](https://www.silextechnology.com/hubfs/docs/HW-17036B_CE_Doc_SD-300.pdf?hsLang=en-us)

Support

**Software:**

Click on the Software Application to download the latest software file for your product.

[Serial Device Server Setup](https://www.silextechnology.com/hubfs/Resource%20firmware/s-67a205.zip)

[ExtendView Software](https://www.silextechnology.com/extendview-software-download?hsLang=en-us)

[SX-Virtual Link for Serial](https://www.silextechnology.com/serial-port-emulator-software-download?hsLang=en-us)

**Firmware:**

[SD-300 Version 2.10](https://www.silextechnology.com/hubfs/Resource%20firmware/SD-300_2.1.0.zip)  
Release Note: Upgraded to be compliant with California Cybersecurity Legislation (security enhancement: forces users to set the password for setting configuration before use).  

This firmware contains a program covered by an open-source license such as GPL (GNU General Public License) or LGPL (GNU Lesser General Public License). Please click [here](http://www.silex.jp/products/license/sd-300_sd-310an/index.html) for the applicable program and license.

Silex Technology, Inc. will provide the source code subject to GPL/LGPL software under terms and conditions of GPL/LGPL to individuals or groups at their own cost by distributing a media such as CD-ROM, etc. for a period of at least 3 years after the date of purchase upon written request. Please email requests to: [silex_oss@silex.jp](mailto:silex_oss@silex.jp).

**Warranty and RMA's**

[Limited Warranty and RMA (Return Merchandise Authorization) Policy](https://www.silextechnology.com/support/warranty-and-return-policy?hsLang=en-us)

**NOTE for EU customers**

This product was discontinued as a commercial product in 2017. The product is still available for use in industrial or professional application environments only, not for offices or households (EN55032 Class A). If you are interested, our sales department will be happy to answer your request at [sales@silexeurope.com](mailto:sales@silexeurope.com).

This product complies with the EU Directive 2014/30 / EU on the harmonization of legal regulations on electromagnetic compatibility in the EU member states and complies with the limit values of EN 55032 Class A.

Warning: This device is a Class A device (EN55032). This device can cause radio interference in living areas; in this case, the operator can be required to take appropriate measures and pay for them.

###### Support

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