RS232 RS422 RS485 to USB Converter

 The AI-7561 is a cost-effective module for transfer serial data over USB. It allows you to connect your serial devices to systems using a USB interface. Connecting the AI-7561 to a PC, you get one RS-232/422/485 port. The "Self Tuner “ chip auto-tunes the baud rate and data format to the Rs-485 network. The AI-7561 module derives the power from the USB port and doesn’t need any power adapter. It also features a high-speed 115.2 Kb/s transmission rate, and supports various independent RS-232/422/485 Ports.

AI-7561 USB to RS232 RS422 RS485 Converter  

USB converter


see manual


  • Full compatibility with USB 1.1specifications.

  • Input: USB protocol.

  • Output: RS-232/422/485 protocol.

  • Speed: “Self Tuner” inside

  • 3000 VDC isolation protection provided.

  • 256 modules max. in one RS-485 network without repeater.

  • 2048 modules max. in one RS-485 network with repeater.

  • Repeater request: 4,000 feet or over 256 modules.

  • Plug-and-play installation.

  • The I-7561 gets the power from USB port; no need external power supply

  • Windows 98/ME/2000/XP and Linux drivers supported. Driver for other operating system are currently under development


  • Compatibility: USB 1.1 standard

  • Input: USB protocol

  • Output:  RS-232/422/485 protocol

  • Cable: USB type A connector (Type A to Type B cable provided).

  • RS-232 Signals: TXD, RXD ,GND

  • RS-422 Signals: RX+, RX-, TX+, TX-

  • RS-485 Signals: DATA+, DATA-

  • “Self Tuner” inside, support multiple Baud Rate and multiple Data Format

  • 256 modules max. in one RS-422/485 network without repeater

  • Isolation voltage: 3000 Vdc

  • Photo-coupler isolation: 2500V rms

  • Repeater request: 4,000 feet or over 256 modules 

  • Communication distance:1.2Km/9600 bps

  • Mounting: Din-rail, wall mounting, piggyback stack

  • Operating temperature: -25°C to +75°C

  • Storage temperature: -25°C to +80°C

  • Humidity: 5~ 95%

  • Dimensions: 123 mm x 72 mm x 33 mm

  • Driver supported: Windows 98/ME/2000/XP and Linux 



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301-924-7400 EXT 25

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