--- product_id: 465342913 title: "EC Buying USB 2.0 to Serial 9-Pin RS232 Serial Adapter, DB-9 USB to Serial RS..." brand: "ec buying" price: "68.93 DT" currency: TND in_stock: true reviews_count: 11 category: "Ec Buying" url: https://www.desertcart.tn/products/465342913-ec-buying-usb-2-0-to-serial-9-pin-rs232 store_origin: TN region: Tunisia --- # 12 Mbps full-speed data transfer Plug & play on Win7/8/10/11 & legacy OS USB 2.0 to DB-9 serial conversion EC Buying USB 2.0 to Serial 9-Pin RS232 Serial Adapter, DB-9 USB to Serial RS... **Brand:** ec buying **Price:** 68.93 DT **Availability:** ✅ In Stock ## Summary > 🔗 Bridge the old and new—stay connected, stay ahead! ## Quick Answers - **What is this?** EC Buying USB 2.0 to Serial 9-Pin RS232 Serial Adapter, DB-9 USB to Serial RS... by ec buying - **How much does it cost?** 68.93 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/465342913-ec-buying-usb-2-0-to-serial-9-pin-rs232) ## 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 - • **Compact & Lightweight:** Sleek blue design weighing just 50 grams, perfect for on-the-go professionals who demand efficiency. - • **Blazing Fast Data Flow:** Experience smooth, full-speed 12 Mbps transfer for reliable communication with your devices. - • **Plug & Play Simplicity:** No complicated drivers or setups—just connect and get instant COM port access on your PC or laptop. - • **Universal Compatibility:** Supports a wide range of OS from Windows XP to Windows 11, plus Mac OS 8.6—future-proof your setup. - • **Seamless Legacy Meets Modern:** Effortlessly convert your USB port into a classic 9-pin serial interface—no extra power needed. ## Overview The EC Buying USB 2.0 to Serial DB-9 RS232 Adapter is a compact, driver-friendly converter that transforms USB ports into classic serial interfaces. Supporting full-speed 12 Mbps data transfer and compatible with a broad range of Windows and Mac OS versions, it enables seamless communication with legacy devices like modems, MCU controllers, and LED screen cards. Perfect for professionals needing reliable serial connectivity without bulky hardware or power adapters. ## Description Buy EC Buying USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter: Serial Adapters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases 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 | #53 in Serial Adapters | | Brand | EC Buying | | Color | blue | | Compatible Devices | Modem, PC | | Connector Type | USB 2.0 | | Customer Reviews | 4.3 out of 5 stars 144 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 ![EC Buying USB 2.0 to Serial 9-Pin RS232 Serial Adapter, DB-9 USB to Serial RS... - Image 1](https://m.media-amazon.com/images/I/6171mo1LHoL.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. ### ⭐⭐⭐⭐ No trajo cd de instalación *by A***Z on July 27, 2025* Dónde está el cd de instalación del cable no llegó ## 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.tn/products/465342913-ec-buying-usb-2-0-to-serial-9-pin-rs232](https://www.desertcart.tn/products/465342913-ec-buying-usb-2-0-to-serial-9-pin-rs232) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-15*