{"product_id":"systembase-multi-8u-rs232-usb-to-8-port-rs232-serial-converter","title":"SystemBase Multi-8U RS232 — USB to 8-Port RS232 Serial Converter Adapter","description":"\u003ch2\u003e📋 Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSystemBase Multi-8U RS232\u003c\/strong\u003e is a professional-grade USB to 8-port RS232 serial converter that instantly adds eight full-signal RS232 serial ports to any Windows or Linux computer through a single USB 2.0 connection. With communication speeds up to 921.6Kbps, ±15kV surge protection on every port, and per-port TX\/RX LEDs for real-time status monitoring, the Multi-8U RS232 is built for demanding industrial and commercial serial communication environments.\u003c\/p\u003e\n\u003cp\u003eEach port features a standard DB9 connector with full RS232 handshaking signals — TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, and GND — making it ideal for connecting legacy serial devices such as modems, barcode scanners, POS terminals, and industrial controllers. The unit is USB bus-powered and includes a latching USB connector for secure, vibration-resistant connections.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e⭐ Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 RS232 Serial Ports from One USB Connection\u003c\/strong\u003e — Adds eight full-signal RS232 serial ports through a single USB 2.0 port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Communication\u003c\/strong\u003e — Supports data rates up to 921.6Kbps for fast, reliable serial data transfer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull RS232 Handshaking\u003c\/strong\u003e — All 9 signals supported per port: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, and GND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±15kV Surge Protection\u003c\/strong\u003e — Built-in ESD protection on every port safeguards connected equipment from electrical surges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTX\/RX LEDs Per Port\u003c\/strong\u003e — Real-time transmit and receive activity indicators on each of the 8 ports for easy diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+5V Power on Pin 9\u003c\/strong\u003e — Optional external DC adapter allows +5V power delivery through pin 9 of each DB9 connector to power connected devices\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDB9 Male or Female Serial Connectors\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— Available with either DB9 Male or DB9 Female serial connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatching USB Connector\u003c\/strong\u003e — Secure locking USB connection prevents accidental disconnection in industrial environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug and Play\u003c\/strong\u003e — Automatically detected by Windows and Linux — no reboot required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Bus-Powered\u003c\/strong\u003e — No external power supply required for standard operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📊 Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface\u003c\/td\u003e\n\u003ctd\u003eUSB 2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Interface\u003c\/td\u003e\n\u003ctd\u003eRS232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController\u003c\/td\u003e\n\u003ctd\u003eFT4232H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Connector\u003c\/td\u003e\n\u003ctd\u003eDB9 Male or DB9 Female - Type selected above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Communication Speed\u003c\/td\u003e\n\u003ctd\u003e921.6Kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRS232 Signals\u003c\/td\u003e\n\u003ctd\u003eTXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Protection\u003c\/td\u003e\n\u003ctd\u003e±15kV ESD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003eTX and RX per port (16 LEDs total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eUSB VBUS (5V \/ 500mA) — external DC adapter optional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin 9 Power Output\u003c\/td\u003e\n\u003ctd\u003e+5V DC (requires external adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported OS\u003c\/td\u003e\n\u003ctd\u003eWindows 7 \/ 8 \/ 10 \/ 11, Windows Server 2008+, Linux Kernel 2.6+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture Support\u003c\/td\u003e\n\u003ctd\u003e32-bit and 64-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 210 × 84 × 26 mm (8.27 x 3.31 x 1.02 inches) L × W × H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 320g (11.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSystemBase Co., Ltd.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e📌 DB9 Pin Assignment (RS232)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eSignal\u003c\/th\u003e\n\u003cth\u003eDirection\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eDCD (Data Carrier Detect)\u003c\/td\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eRXD (Receive Data)\u003c\/td\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eTXD (Transmit Data)\u003c\/td\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eDTR (Data Terminal Ready)\u003c\/td\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eGND (Signal Ground)\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eDSR (Data Set Ready)\u003c\/td\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eRTS (Request to Send)\u003c\/td\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eCTS (Clear to Send)\u003c\/td\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003eRI (Ring Indicator) \/ +5V Power\u003c\/td\u003e\n\u003ctd\u003eInput \/ Power Out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003e💡 Note:\u003c\/strong\u003e Pin 9 functions as RI (Ring Indicator) by default. When an external DC adapter is connected, pin 9 delivers +5V power to connected devices instead.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e🔧 Setup \u0026amp; Configuration\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect the USB cable\u003c\/strong\u003e — Plug the latching USB cable into the Multi-8U RS232 and connect the other end to an available USB port on your computer. You should hear a click when the latch engages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the driver\u003c\/strong\u003e — Windows will attempt automatic driver installation. If needed, download the latest driver from the SystemBase website and install manually. Linux users should contact SystemBase technical support at tech@sysbas.com.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify COM port assignment\u003c\/strong\u003e — Open Device Manager (Windows) and confirm that 8 new COM ports appear under \"Ports (COM \u0026amp; LPT).\" You can reassign COM port numbers here if needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect your serial devices\u003c\/strong\u003e — Attach your RS232 devices to the DB9 connectors using standard straight-through or null-modem cables as required by your device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify communication\u003c\/strong\u003e — Use the TX\/RX LEDs on each port to confirm data is being transmitted and received. Open a terminal program (such as PuTTY or Tera Term) to test communication.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003e💡 Tip:\u003c\/strong\u003e If your serial device requires power from the converter, connect an external 5V DC adapter to the Multi-8U RS232. This enables +5V power delivery through pin 9 of each DB9 connector.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e📦 What's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x SystemBase Multi-8U RS232 Converter\u003cspan\u003e - Serial connector type selected above\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e1x Latching USB Cable\u003c\/li\u003e\n\u003cli\u003e1x Quick Start Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eExternal DC power adapter is not included. Required only if supplying +5V power through DB9 pin 9.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e🔌 Compatible With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWindows 7, 8, 8.1, 10, and 11 (32-bit and 64-bit)\u003c\/li\u003e\n\u003cli\u003eWindows Server 2008, 2012, 2016, 2019, 2022\u003c\/li\u003e\n\u003cli\u003eLinux (Kernel 2.6 and above — contact SystemBase for driver support)\u003c\/li\u003e\n\u003cli\u003eAny RS232 serial device with DB9 connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e🎯 Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePOS (Point of Sale) terminal networks\u003c\/li\u003e\n\u003cli\u003eBarcode scanner and receipt printer connectivity\u003c\/li\u003e\n\u003cli\u003eIndustrial automation and SCADA systems\u003c\/li\u003e\n\u003cli\u003eLegacy modem and dial-up equipment\u003c\/li\u003e\n\u003cli\u003eData acquisition and laboratory instrumentation\u003c\/li\u003e\n\u003cli\u003eBuilding management and access control systems\u003c\/li\u003e\n\u003cli\u003eCNC machine and PLC communication\u003c\/li\u003e\n\u003cli\u003eSurveillance and security system integration\u003c\/li\u003e\n\u003cli\u003eTelecommunications equipment management\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e⚠️ Important Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe Multi-8U RS232 model supports \u003cstrong\u003eRS232 only\u003c\/strong\u003e. If you need RS422\/RS485 ports, look for the \u003ca href=\"https:\/\/envistiamall.com\/products\/systembase-multi-8u-combo-usb-to-8-port-rs422-rs485-serial-converter\" target=\"_blank\" title=\"SystemBase Multi-8U Combo — USB to 8-Port RS422\/RS485 Serial Converter Adapter\" rel=\"noopener\"\u003eMulti-8U Combo model\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAn external 5V DC adapter is required to supply power through pin 9 of the DB9 connectors. Without the adapter, pin 9 functions as RI (Ring Indicator).\u003c\/li\u003e\n\u003cli\u003eFor Linux driver support, contact SystemBase technical support at tech@sysbas.com.\u003c\/li\u003e\n\u003cli\u003eThe latching USB connector provides a secure connection — press the spring button lightly and sweep to disconnect.\u003c\/li\u003e\n\u003cli\u003eMaximum cable length for RS232 communication depends on baud rate. For best results at high speeds, keep cables under 15 meters (50 feet).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📄 Documentation \u0026amp; Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.sysbas.com\/en\/downloads\/usb-serial-series-02-en\/\" title=\"SystemBase Multi-8U RS232 User Manual, Driver and Utilities Downloads\" rel=\"noopener\" target=\"_blank\"\u003eMulti-8U RS232 User Manual, Utilities and Specifications Downloads (SystemBase Website)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SystemBase","offers":[{"title":"Male","offer_id":48368023339257,"sku":"Multi-8-USB-RS232-MALE","price":329.0,"currency_code":"USD","in_stock":false},{"title":"Female","offer_id":48368023372025,"sku":"Multi-8-USB-RS232-FEMALE","price":349.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/files\/systembase-multi-8u-rs232-usb-to-8-port-rs232-serial-converter-adapter-5775606.jpg?v=1778246651","url":"https:\/\/envistiamall.com\/products\/systembase-multi-8u-rs232-usb-to-8-port-rs232-serial-converter","provider":"Envistia Mall","version":"1.0","type":"link"}