{"product_id":"lekuo-m-2-b-m-key-to-4-x-rs422-485-serial-adapter-card","title":"Lekuo M.2 B+M Key 4-Port RS422\/RS485 Serial Card, Industrial Multi-Port UART Expansion Adapter for Embedded Systems","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/01_60df6783-93f3-4249-a8a5-df87629d13b1.jpg?v=1777007974\" alt=\"Lekuo M.2 B+M Key to 4-Port RS422\/485 Serial Adapter Card - Front View\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eM.2 (B+M Key) to 4-Port RS422\/RS485 Serial Adapter Card\u003c\/h2\u003e\n\u003cp\u003eExpand your mini PC or embedded system with 4 independent RS422\/RS485 serial ports — all through a single M.2 (B+M Key) slot. Purpose-built for industrial environments where reliable, long-distance serial communication is essential.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/02_4ebcdcbd-1b48-47d0-9db3-254dfbdbccd7.jpg?v=1777007975\" alt=\"M.2 B+M Key RS422 RS485 Serial Card - Interface Detail\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eDual-Mode RS422 \u0026amp; RS485 Support\u003c\/h3\u003e\n\u003cp\u003eEach of the 4 ports supports both RS422 and RS485 modes, giving you the flexibility to connect a wide range of industrial devices — PLCs, sensors, meters, and more — without additional converters.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/03_8d883b24-287b-4546-a7c6-7eb3b0f15c5c.jpg?v=1777007975\" alt=\"4-Port RS422\/485 Serial Adapter Card - Port Layout\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003e4 Independent Serial Ports\u003c\/h3\u003e\n\u003cp\u003eAll 4 ports operate independently and simultaneously, enabling multi-device communication without signal interference. Ideal for SCADA systems, CNC machines, and data acquisition setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/04_c2b297a9-76f8-4a93-9f20-59a8d7eaf2c5.jpg?v=1777007975\" alt=\"Lekuo Serial Adapter Card - Size Comparison\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eCompact M.2 Form Factor\u003c\/h3\u003e\n\u003cp\u003eDesigned to fit standard M.2 B+M Key slots found in mini PCs, NUCs, and embedded boards. The compact size makes it perfect for space-constrained deployments without sacrificing performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/05_301aa3c6-ce48-41d7-ba75-905b9156b200.jpg?v=1777007974\" alt=\"M.2 Serial Card Installation Guide\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eEasy Installation — Plug and Play\u003c\/h3\u003e\n\u003cp\u003eSimply insert the card into your M.2 slot and install the driver. No complex configuration required. Supports Windows, Linux, and other mainstream operating systems right out of the box.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/06_f34e303e-6e54-42d8-8774-33d8fdc03980.jpg?v=1777007969\" alt=\"RS422\/485 Serial Card - Compatible Devices\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWide Device Compatibility\u003c\/h3\u003e\n\u003cp\u003eCompatible with a broad range of industrial equipment and serial devices. Works seamlessly with PLCs, barcode scanners, industrial cameras, GPS modules, and other RS422\/RS485-enabled hardware.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/07_07d3be21-0a10-49f8-bc2e-e909b4f9fac7.jpg?v=1777007966\" alt=\"Lekuo M.2 Serial Adapter - Industrial Application\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eBuilt for Industrial Environments\u003c\/h3\u003e\n\u003cp\u003eEngineered for stable signal transmission in electrically noisy environments. Supports long-distance communication up to 1200 meters (RS485 mode), making it suitable for factory floors and outdoor deployments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/08_1e6207ec-bead-43ab-ab41-b661417a9412.jpg?v=1777007971\" alt=\"4-Port RS485 Serial Card - Wiring Diagram\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e M.2 B+M Key\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Ports:\u003c\/strong\u003e 4 x RS422 \/ RS485\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Mode:\u003c\/strong\u003e Full-duplex (RS422) \/ Half-duplex (RS485)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOS Support:\u003c\/strong\u003e Windows, Linux\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 181g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e MW84Z41\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/09_e2c33737-70aa-4b97-bb69-25e6c27a1a4a.jpg?v=1777007976\" alt=\"Lekuo M.2 RS422\/485 Serial Card - Package Contents\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003eEach package includes the M.2 RS422\/RS485 serial adapter card and all necessary accessories for installation. Ready to use right out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eDriver Download\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.lekuo.com\/uploadfile\/upload\/\/data\/upload\/image\/WCH382_384.zip\" style=\"display:inline-block;padding:10px 20px;background:#1a73e8;color:#fff;text-decoration:none;border-radius:5px;\"\u003e⬇ Download Driver (WCH382\/384)\u003c\/a\u003e\u003c\/p\u003e","brand":"Lekuo","offers":[{"title":"Default Title","offer_id":52655862251833,"sku":"MW84Z41","price":39.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0936\/4897\/8233\/files\/DSC00614.jpg?v=1777007864","url":"https:\/\/lekuo.shop\/ko\/products\/lekuo-m-2-b-m-key-to-4-x-rs422-485-serial-adapter-card","provider":"Lekuo","version":"1.0","type":"link"}