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USB2-4COMi-SI-TB Introduction USB 2.0 to Industrial Quad Serial Adapter with Isolation and surge protection

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USB 2.0 to Quad Serial adapter

Key Features

Introduction & Features

USB 2.0 to Industrial Quad Serial Adapters


USB 2.0 to Quad industrial serial adapters are designed to make serial RS-422 and RS-485 port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB to industrial serial adapter instantly adds four  RS-232/422/485 multi-electrical interface serial communication port to your system. By taking advantage of the plug-and-play and hot-plug feature of the USB bus, the USB2-4COMi-SI-TB industrial serial adapters make it easier than ever to add 4 industrial communication ports to your system.

Plugging the USB quad industrial serial adapters to the USB port, the adapters are automatically detected and installed. There are no IRQ & COM port conflicts, since the port doesn’t require any additional IRQ, DMA, memory as resources on the system. The RS-232 or RS-422/485 port functions as native Windows COM port, and it is compatible with Windows serial communication applications. Each port is individually configurable. The adapters are designed with external switches to set RS-232, RS-422 or RS-485 ports and different operation modes conveniently.

The isolation and surge protection models USB2-4COMi-SI-TB supports 3,000 Volt DC optical isolation, 15KV ESD protection and 600W surge protection for all serial signals. 

Specification& Features


  • Supports USB 1.1 and USB 2.0 transfer speeds from 1.5 Mbps up to 480 Mbps, automatic link and speed detection
  • Adds four high speed RS-232/422/485 serial ports via USB connection
  • 2K byte receive buffer
  • 2K byte transmit buffer for high speed data throughput
  • Requires no IRQ, DMA, I/O port
  • Data rats: 300 bps to 921.6K bps
  • Each serial port supports 5-pin screw-lock-type terminal block connector
  • Auto transmit buffer control for 2-wire RS-485 half-duplex operation
  • Biasing and Termination resistors installed on-board
  • Support RS-232 3-wire signals: RxD, TxD, GND
  • Support RS-422, RS-485 4-wire signals: TxD-, TxD+, RxD+, RxD-
  • Support RS-485 2-wire signals: data-, data+
  • Monitor LEDs of TxD, RxD indicating port status
  • AC to DC 12V, 1A switching power supply included
  • Virtual COM port drivers available for Windows 10, 8.1, 8, 7, Vista, 2003, XP, 2000
  • The USB2-4COMi-SI-TB support 3KV optical isolation, 15KV ESD protection and 600W surge protection
  • Industrial-grade metal case with DIN-rail ears for DIN-rail mounting



Payment Details

  • Payment Terms : TT ,PayPal

Last Update : 2019-07-24
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