--- product_id: 3981160 title: "Mini USB to RS485 / RS422 Converter FTDI CHIP with Screw Terminals" brand: "gearmo" price: "1638414₫" currency: VND in_stock: true reviews_count: 10 category: "Gearmo" url: https://www.desertcart.vn/products/3981160-mini-usb-to-rs485-rs422-converter-ftdi-chip-with-screw store_origin: VN region: Vietnam --- # 600W surge protection LED indicators for instant connection status FTDI chipset for seamless USB to RS485/422 Mini USB to RS485 / RS422 Converter FTDI CHIP with Screw Terminals **Brand:** gearmo **Price:** 1638414₫ **Availability:** ✅ In Stock ## Summary > 🔗 Connect Like a Pro — Legacy Meets Future, No Compromises ## Quick Answers - **What is this?** Mini USB to RS485 / RS422 Converter FTDI CHIP with Screw Terminals by gearmo - **How much does it cost?** 1638414₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/3981160-mini-usb-to-rs485-rs422-converter-ftdi-chip-with-screw) ## Best For - gearmo enthusiasts ## Why This Product - Trusted gearmo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant Diagnostics:** Power, TX, and RX LEDs provide real-time status so you never guess if it’s working. - • **Zero-Delay Data Flow:** Unique internal I/O circuit auto-controls data streams—no handshaking hassle required. - • **Plug & Play Versatility:** Effortlessly connects legacy serial devices to modern USB ports across Windows, Linux, and macOS. - • **Industrial-Grade Durability:** Built to withstand 600W surges and 15kV ESD for mission-critical reliability. - • **Secure Screw Terminal Connectors:** Robust wired RS485/422 connections with integrated terminal blocks for zero slip-ups. ## Overview The Gearmo Mini USB to RS485/RS422 Converter leverages an FTDI chipset and industrial-grade protections to deliver seamless, zero-delay serial communication. Compact yet rugged, it supports baud rates up to 1Mbps and features secure screw terminals plus LED indicators for instant diagnostics. Compatible with all major OS platforms, it’s the trusted choice for professionals demanding reliable legacy device integration. ## Description desertcart.com: Gearmo USB to Serial RS485 Converter with LED Indicators, FTDI Chipset, Terminal Connectors, ESD Protection, Wide OS Support, RS422 Compatible : Electronics Review: Purchased 2020 - 5 years and going strong. I use this adapter to scan BACNET comm lines. It has never not worked. I will use this when other adapters fail to double check myself. I believe this can also be used to connect to generic BACNET devices like Mitsubishi comm cards. (I originally purchased it to program a mini split comm adapter). I recommend this to co workers as their preferred RS-485 adapter. Ken Trane Controls. Review: Worked Great!! - Worked great! Fast delivery!! ## Features - [ USB TO SERIAL RS-485/422 ADAPTER ] : Compact design with a unique I/O circuit with an internal zero delay. The transceiver controls the data stream automatically without handshaking RTS, DTR, etc. signals. - [ INDUSTRIAL READY ] : Equipped for 600W surge protection, 15kV ESD isolation, and baud rates from 300bps to 1Mbps. Ready for commercial, industrial, and office applications. - [ RELIABLE CONNECTIONS ] : Built-in signal tester features Power, TX, and RX LED indicators for quick and easy connection testing. Integrated terminal block connector with screws for secure wired RS485 and RS422 conversions. - [ WIDE COMPATIBILITY ] : Built with an FTDI Chipset. Works seamlessly with Windows 7, 8, 10, 11, Linux, and macOS 10.X, making it a highly versatile solution across platforms. - [ WHY Gearmo? ] : Your trusted partner based in the USA, providing advanced engineering, highly reliable and superior built products to handle the most demanding industries for over 10 years. - [ ENGINEERING SUPPORT ] : Need specs? Contact us for CAD files, mechanical drawings, or datasheets to support your integration or project needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005CPI0JQ | | Best Sellers Rank | #86 in Serial Adapters | | Brand | Gearmo | | Color | Black | | Compatible Devices | Laptops, Desktops, Mouse, Printers, Tablets, etc. | | Connector Type | 5-Pin Terminal Block, USB Type A | | Customer Reviews | 4.7 4.7 out of 5 stars (174) | | External Testing Certification | Não aplicável | | Finish | Matte | | Global Trade Identification Number | 00729440692391 | | Input Voltage | 5 Volts (DC) | | Item Dimensions | 2.5 x 1.44 x 0.5 inches | | Item Weight | 1 Ounces | | Manufacturer | Gearmo | | Mfr Part Number | USA-482422 | | Model Number | USA-482422 | | 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 | Connecting legacy serial devices to modern USB host systems | | UPC | 729440692391 | | Unit Count | 1.0 Count | | Warranty Type | 1 Year | ## Product Details - **Color:** Black - **Compatible Devices:** Laptops, Desktops, Mouse, Printers, Tablets, etc. - **Connector Type:** 5-Pin Terminal Block, USB Type A - **Item dimensions L x W x H:** 2.5 x 1.44 x 0.5 inches - **Specific Uses For Product:** Connecting legacy serial devices to modern USB host systems ## Images ![Mini USB to RS485 / RS422 Converter FTDI CHIP with Screw Terminals - Image 1](https://m.media-amazon.com/images/I/61aFa-H0uGL.jpg) ## Questions & Answers **Q: There is usually a 120 ohm resistor in RS-485 connections. Does this adapter incorporate that 120 ohms internally or do I still need the resistor?** A: Termination is only required when both length of line and baud rate affect propagation delay. I've used this adapter without a problem with a few different components with lengths way under 1000ft and never needed a termination resistor. You may have to double check line length and baud rate to verify propagation delay in nanosec to confirm whether you'll need a terminator. I hope this helps. **Q: is that really a Mini USB? it looks like a Male B USB connector.** A: It is a Full Size Male USB Connector, not Mini USB. It works really good... and I find it surprising it says Mini; I don't remember it saying that back when I bought it. I hope this helps. **Q: Is there any visual indicators that it is "working"? i.e. transmit, receive, power, etc. LEDs?** A: In the instruction sheet that is shown it says:"Power indicator light and data traffic indicator light are also available with the converter for malfunction indication"There are PWR, RXD and TXD labeled LEDs on the module just above the terminal block. **Q: Is this unit plug and play with Windows 10?** A: Yes, it fully supports Windows 10. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Purchased 2020 *by K***N on August 7, 2025* 5 years and going strong. I use this adapter to scan BACNET comm lines. It has never not worked. I will use this when other adapters fail to double check myself. I believe this can also be used to connect to generic BACNET devices like Mitsubishi comm cards. (I originally purchased it to program a mini split comm adapter). I recommend this to co workers as their preferred RS-485 adapter. Ken Trane Controls. ### ⭐⭐⭐⭐⭐ Worked Great!! *by R***A on May 22, 2025* Worked great! Fast delivery!! ### ⭐⭐⭐⭐ Good unit *by B***2 on August 31, 2017* Works, would have given it 5 stars except there was no written documentation or useful marking on the case. I added my own label. I have used in half duplex (2 wire) and full duplex 4-wire settings. My use was to connect to two servo motors from Applied Motion Products. ## Frequently Bought Together - Gearmo USB to RS-422/485 Converter FTDI CHIP w/Terminals - USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7/, Mac OS X 10.6 and Above - DTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet --- ## 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.vn/products/3981160-mini-usb-to-rs485-rs422-converter-ftdi-chip-with-screw](https://www.desertcart.vn/products/3981160-mini-usb-to-rs485-rs422-converter-ftdi-chip-with-screw) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-16*