The I-7563/I-7563U is a cost-effective module for transferring serial data via USB. It allows you to connect your serial devices to systems that use a USB interface. Connecting the I-7563/I-7563U to a PC, you get one COM port on system. The I-7563/I-7563U contains “Self-Tuner”, this chip auto-tunes the Baud Rate and data format to the RS-485 network. The I-7563/I-7563U module derives its power from the USB port and doesn’t need any power adapter.

Do you have any RS-485 wiring problems I-7563/I-7563U is a USB to 1-channel RS-485 converter with a 3-way RS-485 Hub. Each channel contains its own RS-485 driver IC, so it can support star-shaped wiring.

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    • Fully Compliant with the USB 1.1/2.0/3.0
    • RS-485 Active Star Wiring Applications
    • 3000 VDC Isolation Protection on the RS-485 side
    • Transmission speed up to 921.6 kbps (For I-7563U)
    • No External Power Supply required
    • Automatic RS-485 Direction Control
    • ESD Protection for the RS-485 Data Line
    • Operating Temperatures, -25 °C ~ +75 °C
    • DIN-Rail Mounting



    I-7563 Driver Windows 98/ME/2000/XP/Vista (32/64-bit)/7 (32/64-bit)/Linux
    I-7563U Driver Windows 98/ME/2000/XP/Vista (32/64-bit)/7 32/64-bit)/8 (32/64-bit)/8.1 (32/64-bit)/10 (32/64-bit)/2012/Linux

    Hardware Specifications

    Models I-7563 I-7563U
    USB Fully Compliant with the USB 1.1/2.0/3.0
    RS-485 3 Channels: For active star wiring applications
    Data1+, Data1-
    Data2+, Data2-
    Data3+, Data3-
    RS-485 Transfer Distance Max. 1,200 m at 9.6 kbps; Max. 400 m at 115.2 kbps
    (Belden 9841 2P twisted-pair cable, if different cables are used, the transmission distance may change)
    Self-Tuner Asic Inside for RS-485 Yes
    Speed 300 ~ 115200 bps 300 ~ 921.6 kbps
    Connection RS-485 Removable 10-Pin Terminal Block
    USB Type B
    Cable Included CA-USB18 (1.8 m Cable) x 1
    LED Indicators
    Power Yes
    Input Voltage Range +5 VDC from USB
    Power Consumption 0.5 W
    Casing Plastic
    Flammability Fire-Retardant Materials (UL94-V0 Level)
    Dimensions (W x H x D) 72 mm x 115 mm x 35 mm
    Installation DIN-Rail
    Operating Temperature -25 °C ~ +75 °C
    Storage Temperature -30 °C ~ +75 °C
    Humidity 10 ~ 90% RH, non-condensing

    Hardware Structure

    Block Diagram

    Pin Assignment


    Ordering Informations

    I-7563 CR USB to Isolated RS-485 Active Star Wiring Converter (RoHS)
    I-7563-G CR USB to Isolated RS-485 Active Star Wiring Converter (Gray Cover) (RoHS)
    I-7563U-G CR USB to Isolated RS-485 Active Star Wiring Converter (Gray Cover) (RoHS)