---
product_id: 40746912
title: "DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter"
brand: "lm yn"
price: "$17.39"
currency: USD
in_stock: true
reviews_count: 6
category: "Lm Yn"
url: https://www.desertcart.us/products/40746912-db9-rs232-female-to-rj45-female-adapter-com-port-to
store_origin: US
region: United States of America
---

# Stable signal transmission Universal DB9 compatibility Durable alloy interface DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter

**Brand:** lm yn
**Price:** $17.39
**Availability:** ✅ In Stock

## Summary

> 🔌 Connect the past to the future—stay wired, stay winning!

## Quick Answers

- **What is this?** DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter by lm yn
- **How much does it cost?** $17.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/40746912-db9-rs232-female-to-rj45-female-adapter-com-port-to)

## Best For

- lm yn enthusiasts

## Why This Product

- Trusted lm yn brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Sleek Design:** Lightweight, black PVC shell with integral injection molding fits perfectly in any workspace without clutter.
- • **Plug & Play Simplicity:** Supports continuous 24/7 operation with 10,000+ nondestructive plug cycles—engineered for professional-grade endurance.
- • **Versatile Application Ready:** Ideal for desktop computers, digital machine tools, PDAs, barcode scanners, and more—future-proof your connectivity.
- • **Seamless Serial-to-Ethernet Bridge:** Effortlessly connect legacy DB9 serial devices to modern RJ45 LAN networks without a hitch.
- • **Built to Last, Built for Performance:** Super-thick alloy interface ensures minimal signal loss with oxidation and corrosion resistance for long-term reliability.

## Overview

The DB9 RS232 Female to RJ45 Female Adapter by LM YN is a robust, high-performance converter designed to link traditional DB9 serial devices with modern Ethernet networks. Featuring a corrosion-resistant alloy interface and durable PVC shell, it guarantees stable, low-impedance signal transmission and supports continuous 24/7 operation. Compact and versatile, it’s perfect for professionals needing reliable serial-to-LAN connectivity across various devices, backed by a one-year warranty.

## Description

Product Name: DB9 Fmale to RJ45 Adapter. Applications: desktop computer, digital machine tools, PDA, bar code and other DB9 serial devices. Colour: Black. Shell material: PVC material. Size: 26 * 22 * 57mm / 1.03 * 0.81 * 2.25in (L * W * H). Weight: 38.5g / 1.36oz. Instructions for use: 1. For this adapter, use UTP or CAT6. 2. When using the Extender, it is recommended to use it within 20 meters. Uses: 1. The serial interface transmits BD9 signals through the network cable. 2. Cable wiring is completed, can not use the DB9 line of renovation works. 3. Engineering decoration company wiring scheme. 4. This adapter can be transferred to DB9 serial port, DB9 interface for the host computer or a variety of displays, network cable were connected to the two adapter cable network interface. Package Included: 1*DB9 Female to RJ45 Adapter RJ45 port to DB9 hole Serial port to the network port crystal head If you for any reason are not happy with any product supplied , please do not hesitate to contact us and we will do our best to solve your problem .

Review: Good serial adapter - This adapter allows you to connect your serial devices with a DB9 male jack to a LAN ethernet connection using an RJ45 plug. Great quality. 5 stars.
Review: Tested the pinout and it works - This adapter works. I tested the pins with to the pin out provided on this page and the pins all matched with the color coded wires with the T-568B RJ45 standard.

## Features

- The new upgrade, compatible with all standard DB9 serial devices, all day continuous work, stable and reliable performance.
- Interface with super-thick alloy, reducing the transmission impedance, reduce signal loss, oxidation resistance, corrosion resistance, wear resistance, 10,000 nondestructive testing plug.
- Applications: desktop computer, digital machine tools, PDA, bar code and other DB9 serial devices.
- High-quality environmentally friendly PVC material, super wear-resistant, Integral injection molding.
- DB9 RS232 Male Port to RJ45 Female: B01N91YKVF

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N8VEG7G |
| Best Sellers Rank | #479 in Cable Gender Changers |
| Brand | LM YN |
| Color | Black |
| Compatible Devices | Desktop |
| Connector Type | RJ45 |
| Customer Reviews | 4.3 out of 5 stars 58 Reviews |
| Finish | Metallic |
| Finish Type | Metallic |
| Item Dimensions | 4 x 1.9 x 0.8 inches |
| Item Type Name | DB9 RS232 Female to RJ45 Female |
| Item Weight | 18.14 g |
| Item dimensions L x W x H | 4 x 1.9 x 0.8 inches |
| Manufacturer | LM YN |
| Model Number | 8541674387 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| UPC | 603983633366 |
| Unit Count | 1.0 Count |
| Warranty Description | One-year after-sales warranty |

## Product Details

- **Brand:** LM YN
- **Color:** Black
- **Compatible Devices:** Desktop
- **Connector Type:** RJ45
- **Item dimensions L x W x H:** 4 x 1.9 x 0.8 inches

## Images

![DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter - Image 1](https://m.media-amazon.com/images/I/71IGhu798BL.jpg)
![DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter - Image 2](https://m.media-amazon.com/images/I/61iQ2SGB+TL.jpg)
![DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter - Image 3](https://m.media-amazon.com/images/I/61Xzp6uIaCL.jpg)
![DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter - Image 4](https://m.media-amazon.com/images/I/81zpI-OJwGL.jpg)
![DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter - Image 5](https://m.media-amazon.com/images/I/715yDXetElL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good serial adapter
*by K***Y on August 14, 2023*

This adapter allows you to connect your serial devices with a DB9 male jack to a LAN ethernet connection using an RJ45 plug. Great quality. 5 stars.

### ⭐⭐⭐⭐⭐ Tested the pinout and it works
*by A***R on February 11, 2019*

This adapter works. I tested the pins with to the pin out provided on this page and the pins all matched with the color coded wires with the T-568B RJ45 standard.

### ⭐⭐⭐⭐⭐ Works well and quality seems good
*by P***N on December 27, 2019*

Tested and works/wired as advertised at 9600 baud

## Frequently Bought Together

- LM YN DB9 RS232 Female to RJ45 Female Adapter COM Port to LAN Ethernet Port Converter
- LM YN DB9 RS232 COM Male Port to RJ45 Female Connector Card DB9 Serial Port Extender to LAN CAT5 CAT6 RJ45 Network Ethernet Cable Adapter

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-04*