{"product_id":"usb-to-rs485-serial-converter-module-ch340-plc-compatible","title":"USB to RS485 Serial Converter Module – CH340, PLC \u0026 Multi-OS","description":"\n\u003ch2\u003eUSB to RS485 Serial Converter Communication Module\u003c\/h2\u003e\n\u003cp\u003eSeamlessly bridge your computer to industrial RS485 devices with this compact, plug-and-play USB-to-RS485 Serial Converter Module. Powered by the reliable \u003cstrong\u003eCH340 chip\u003c\/strong\u003e, this module delivers stable, high-speed communication for PLCs, I\/O modules, sensors, and a wide range of industrial equipment. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCH340 Chip Technology:\u003c\/strong\u003e Ensures stable operation and broad compatibility with mainstream operating systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB-A Interface:\u003c\/strong\u003e Simple plug-and-play setup — no complicated configuration required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-OS Support:\u003c\/strong\u003e Fully compatible with Windows, macOS, Linux, and other operating systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Terminating Resistor Selection (TR):\u003c\/strong\u003e Easily adapts to varying transmission environments for consistently stable signal quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Functions reliably from -20°C to 85°C (relative humidity 10%–90%), making it suitable for demanding industrial environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Energy-efficient design minimises heat output and operating costs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Overall length approx. 18.6 cm, cable length approx. 10 cm — easy to route in tight spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInterface Connections\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e External RS485 Device Line A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB:\u003c\/strong\u003e External RS485 Device Line B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eG:\u003c\/strong\u003e External RS485 Device GND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTR:\u003c\/strong\u003e Termination Resistor Selection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB-A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCH340\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to 85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10% – 90%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 18.6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 10 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOS Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWindows, macOS, Linux, and others\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × USB-to-RS485 Serial Converter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × USB-to-RS485 Serial Port Converter Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle | Beads \u0026amp; Crafts\u003c\/a\u003e — ideal for organising small electronic components and connectors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/vintage-baroque-embossed-metal-decorative-tray-jewelry-organizer\"\u003eVintage Baroque Embossed Metal Tray – Jewelry \u0026amp; Decor Organizer\u003c\/a\u003e — keep your modules and adapters neatly sorted on your workbench.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this USB to RS485 converter compatible with Windows 11 and the latest macOS versions?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The module uses the CH340 chip, which has driver support for Windows (including Windows 11), macOS, and Linux. You may need to install the CH340 driver on some systems — it is freely available from the chip manufacturer's website.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this RS485 serial converter with a PLC or industrial I\/O module?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. This module is designed specifically for connecting a computer to RS485-based industrial devices including PLCs, serial I\/O modules, sensors, and similar equipment. The terminating resistor selection (TR) pin allows you to match the module to your specific network topology for reliable data transmission.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum operating temperature for this USB to RS485 module?\u003c\/h4\u003e\n\u003cp\u003eA: The module operates reliably across a wide range of -20°C to 85°C with a relative humidity of 10%–90%, making it well suited for both office and demanding industrial environments.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this converter require an external power supply?\u003c\/h4\u003e\n\u003cp\u003eA: No external power supply is needed. The module is powered directly through the USB-A connection from your computer or USB hub, keeping your setup clean and simple.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this USB to RS485 converter compatible with Windows 11 and the latest macOS versions?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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