--- product_id: 465342913 title: "USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter" brand: "ec buying" price: "£8.42" currency: GBP in_stock: true reviews_count: 11 category: "Ec Buying" url: https://www.desertcart.co.uk/products/465342913-usb-2-0-to-serial-db-9-rs232-adapter-windows store_origin: GB region: United Kingdom --- # 12 Mbps Full-Speed Transfer Plug & Play, No External Power USB 2.0 to DB-9 Serial USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter **Brand:** ec buying **Price:** £8.42 **Availability:** ✅ In Stock ## Summary > 🔗 Unlock Legacy Tech with Modern Speed! ## Quick Answers - **What is this?** USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter by ec buying - **How much does it cost?** £8.42 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/465342913-usb-2-0-to-serial-db-9-rs232-adapter-windows) ## Best For - ec buying enthusiasts ## Why This Product - Trusted ec buying brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Convenience:** No external power or physical drive needed—just plug in and go, saving you time and headaches. - • **Universal Compatibility:** Supports Windows 7/8/10/11 (32/64-bit), XP, Mac OS 8.6+, and more for ultimate flexibility. - • **High-Speed Data Transfer:** Enjoy reliable 12 Mbps full-speed communication for smooth device control and data exchange. - • **Compact & Lightweight Design:** Weighing just 0.05 kg, this sleek blue adapter fits perfectly in any professional setup. - • **Seamless USB to Serial Bridge:** Effortlessly connect legacy RS232 devices to modern USB ports without hassle. ## Overview The EC Buying USB 2.0 to Serial DB-9 RS232 Adapter is a compact, plug-and-play converter that enables seamless connection of traditional serial devices to USB ports. Supporting a wide range of operating systems and delivering up to 12 Mbps data transfer speed, it’s the perfect tool for professionals needing reliable legacy device integration without external power or complex installation. ## Description Product description EC Buying also focuses on providing customers with comprehensive services. We have a professional sales team, which can provide customers with timely and accurate product consultation, and after-sales service. We always put customers at the center, and strive to create greater value for customers. EC Buying , are always committed to innovation and breakthroughs in the field of electronic components, providing electronic component products to global customers with a professional, focused, and focused attitude. We have a wide range of product lines, covering various electronic components such as module, development board, resistors, capacitors, diodes, transistors, integrated circuits , etc., meeting the needs of different industries and fields. USB to DB9 RS232 Product features: easy installation, no external power supply, and physical drive required Scope of application This product can easily realize the conversion between the computer USB interface and the universal serial port, providing a fast channel for the computer without a serial port, and using this product is equivalent to turning the traditional serial port device into a plug-and-play USB device. Supporting various models of single-chip microcomputer, single-chip STC download, LED screen control card, MODEM, and ISDN terminal adapter communication is suitable for computers or notebooks with USB ports. Application platform: Support USB1.0/1.1 specification, compatible with USB2.0 specification, support full-speed transfer mode 12MBPS, support Win98, 98SE, Me, 2000, XP, Mac OS8.6, vista, win7-32, 64-bit. Installation instructions 1. Run the driver CH340.EXE file to install 2. Connect the USB serial cable to the USB interface of the computer, and automatically install the driver 3. After the installation is successful, the COM port appears in the device manager. Easily convert USB 2.0 to Serial 9-Pin RS232 with this plug-and-play USB to 9-pin serial cable, no external power supply required Fast installation with no physical drive needed, providing a seamless connection for computers or notebooks with USB ports, Support various models of MCU, MCU STC download, LED screen control card, MODEM, and ISDN terminal adapter communication Compatible with USB1.0/1.1 and USB2.0 specification, supporting full-speed transfer mode 12MBPS for efficient data transfer, Enjoy easy installation by running the CH340.EXE driver file and connecting the USB serial cable to your computer's USB interface Review: Perfectly work. - Works perfectly with my Win-11 & Win-10 laptop without any needs for driver. Review: Is great price works well - Worked perfectly to add a serial com port to a newer laptop. ## Features - √USB to 9-pin serial cable Product features: easy installation, no external power supply, and physical drive required - √Applicable scope: This product can easily realize the conversion between the USB interface of the computer and the universal serial port, providing a fast channel for the computer without a serial port, and using this product is equivalent to turning the traditional serial port device into a plug-and-play USB device. - √ Supports various models of MCU, MCU STC download, LED screen control card, MODEM, and ISDN terminal adapter communication is suitable for computers or notebooks with USB ports. - √Application platform: Support USB1.0/1.1 specification, compatible with USB2.0 specification, support full-speed transfer mode 12MBPS, support Win98, 98SE, Me, 2000, XP, Mac OS8.6, vista, win7-32, 64-bit. - √Installation Instructions: 1. Run the driver CH340.EXE file to install 2. Connect the USB serial cable to the USB interface of the computer, and automatically install the driver 3. After the installation is successful, the COM port appears in the device manager ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B3937767 | | Best Sellers Rank | #48 in Serial Adapters | | Brand | EC Buying | | Color | blue | | Compatible Devices | Modem, PC | | Connector Type | USB 2.0 | | Customer Reviews | 4.2 out of 5 stars 137 Reviews | | Finish | Finish | | Finish Type | Finish | | Item Weight | 0.05 Kilograms | | Manufacturer | HL-340 USB to serial cable (COM) USB-RS232 USB nine-pin serial cable supports win7-64 bit | | Mfr Part Number | EC Buying HL-340 USB | | Model Number | HL-340 | | Number of Items | 1 | | Number of Ports | 2 | | Package Quantity | 1 | | Power Plug Type | No Plug | | Smart Home Compatibility | Not Smart Home Compatible | | Specific Uses For Product | PC | | Unit Count | 1 Count | ## Product Details - **Brand:** EC Buying - **Color:** blue - **Compatible Devices:** Modem, PC - **Connector Type:** USB 2.0 - **Specific Uses For Product:** PC ## Images ![USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter - Image 1](https://m.media-amazon.com/images/I/6171mo1LHoL.jpg) ![USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter - Image 2](https://m.media-amazon.com/images/I/71I7+Re6PvL.jpg) ![USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter - Image 3](https://m.media-amazon.com/images/I/71OMEX1KgxL.jpg) ![USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter - Image 4](https://m.media-amazon.com/images/I/7191JP-TfrL.jpg) ![USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter - Image 5](https://m.media-amazon.com/images/I/71QsogcEEJL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfectly work. *by S***C on January 10, 2026* Works perfectly with my Win-11 & Win-10 laptop without any needs for driver. ### ⭐⭐⭐⭐⭐ Is great price works well *by S***E on August 26, 2025* Worked perfectly to add a serial com port to a newer laptop. ### ⭐⭐⭐⭐⭐ Works well *by L***N on July 1, 2025* Worked perfectly. Driver's installed automatically on windows 11. ## Frequently Bought Together - EC Buying USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter - 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.co.uk/products/465342913-usb-2-0-to-serial-db-9-rs232-adapter-windows](https://www.desertcart.co.uk/products/465342913-usb-2-0-to-serial-db-9-rs232-adapter-windows) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*