--- product_id: 241595826 title: "DTECH DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices" brand: "dtech" price: "$15.73" currency: USD in_stock: true reviews_count: 4 category: "Dtech" url: https://www.desertcart.us/products/241595826-dtech-db9-to-rj45-serial-adapter-rs232-male-to-rj store_origin: US region: United States of America --- # Supports 20mA current rating Extends RS232 signals up to 65ft DB9 Male to RJ45 Female adapter DTECH DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices **Brand:** dtech **Price:** $15.73 **Availability:** ✅ In Stock ## Summary > 🔗 Connect the past to the future—effortlessly and reliably. ## Quick Answers - **What is this?** DTECH DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices by dtech - **How much does it cost?** $15.73 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/241595826-dtech-db9-to-rj45-serial-adapter-rs232-male-to-rj) ## Best For - dtech enthusiasts ## Why This Product - Trusted dtech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** Works flawlessly with laptops, printers, modems, routers, CNC machines, POS devices, and more. - • **Compact Matte Finish Design:** Sleek, lightweight, and built to blend into any professional workspace without bulk. - • **Secure & Reliable Connection:** Thumbscrews ensure a rock-solid, vibration-resistant link for mission-critical setups. - • **Extend Your Reach Up to 65 Feet:** Use paired adapters with Cat5e/Cat6 cables to effortlessly expand your serial communication range. - • **Seamless Serial to Ethernet Bridge:** Convert your legacy RS232 devices to modern RJ45 cabling with zero hassle. ## Overview The DTECH DB9 to RJ45 Serial Adapter is a compact, cost-effective solution designed to convert standard 9-pin RS232 serial connections into RJ45 Ethernet-compatible interfaces. Supporting data transmission distances up to 65 feet via Cat5e or Cat6 cables, it ensures secure, bi-directional communication for a wide range of professional devices including computers, printers, modems, and industrial equipment. Featuring a matte finish and thumbscrew-secured connectors, this adapter delivers reliable performance with a 20mA current rating and a 180-day limited warranty. ## Description Connector A: DB9 9 Pin Male Connector B: RJ45 8 Pin Female Data cabling transmission signal up to 20M Compatible with Standard 9 Pin D-sub RS-232 Devices e.g. computer laptop, printer, modem, router, PDA, POS device, digital CNC machine tool, Barcode scanner, etc. Please be Noted: DB9 serial RJ45 adapter is only an adapter for extending RS232 serial data (max. distance 65ft), not a console adapter. Usually this adapter needs to be used in pairs. DB9 serial data is transmitted over the network cable. To use this pair of adapters, you need to connect them with a cat5e or CAT6 cable. What’s Included 1x DB9 Male to RJ45 Female Serial Adapter Review: Good product - They worked perfectly Review: Easy and work - Do the work ## Features - A simple, cost effective solution to process serial data communication between RS232 COM port devices over inexpensive cat5 cat6 RJ45 network cable - DB9 male to RJ45 modular adapter converts DB9 male connector into an RJ45 female connector (DB9 male - RJ45 Female pinout: straight through 1-1, 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, 8-8, 9-x) - A pair of DB9 to RJ45 socket coupler can be used a extender to extend rs232 serial signals up to 65ft - Bi-directional DB-9 male to RJ-45 female converter comes with thumbscrews for easy and secure connection - (Please be noted it's NOT 15 pin VGA video port) It's compatible with Standard 9 Pin D-sub RS-232 Devices e.g. computer laptop, printer, modem, router, PDA, POS device, digital CNC machine tool, Barcode scanner, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08JLX4N6K | | Best Sellers Rank | #31 in Serial Adapters | | Brand | DTECH | | Color | black | | Compatible Devices | Desktop | | Connector Type | RJ45 | | Current Rating | 20 Milliamps | | Customer Reviews | 4.5 out of 5 stars 110 Reviews | | Finish | Matte | | Finish Type | Matte | | Item Type Name | RS232 to Ethernet Converter | | Item Weight | 0.02 Kilograms | | Manufacturer | guangzhouditedianzikejiyouxiangongsi | | Model Number | CB0240 | | Number of Items | 1 | | Number of Ports | 2 | | Package Quantity | 1 | | Power Plug Type | No Plug | | Specific Uses For Product | PC | | Unit Count | 1.0 Count | | Warranty Description | 180 days from purchase date | | Warranty Type | Limited | ## Product Details - **Brand:** DTECH - **Color:** black - **Compatible Devices:** Desktop - **Connector Type:** RJ45 - **Specific Uses For Product:** PC ## Images ![DTECH DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices - Image 1](https://m.media-amazon.com/images/I/51Zfc6V09PL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by R***N on January 31, 2026* They worked perfectly ### ⭐⭐⭐⭐⭐ Easy and work *by W***S on July 17, 2025* Do the work ### ⭐⭐⭐⭐ Fair Quality but one screw is missing threads *by J***Y on May 11, 2022* Quality is OK but not the greatest. Out of 4 screws, 1 has no threads so that adapter can not be properly installed. ## Frequently Bought Together - DTECH DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices - SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P) - OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)… --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/241595826-dtech-db9-to-rj45-serial-adapter-rs232-male-to-rj](https://www.desertcart.us/products/241595826-dtech-db9-to-rj45-serial-adapter-rs232-male-to-rj) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-18*