USB to 2-Port Serial

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  • USB to 2-Port Serial

USB to 2-Port Serial


Quantity in stock: 138


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USB converter box with 2 RS-232 serial ports


SIIG’s USB to 2-Port Serial is designed to enable you to connect additional RS-232 9-pin serial devices to your current USB-enabled desktop or notebook computer. It instantly adds two additional RS-232 9-pin serial ports to your computer via an available USB 1.1 or USB 2.0 port. The USB to 2-Port Serial features a built-in 16550 UART with 512-byte FIFO buffers to dramatically increase data transmit and receive speeds under Windows multitasking environment. It supports baud rates of up to 115Kb/s and allows you to hot-swap devices (connect and disconnect) without first turning your system off. It is the perfect solution for connecting additional RS-232 serial devices such as modems, digital cameras, ISDN terminal adapters, graphics tablets, PDAs, bar code scanners, and label printers.

The USB to 2-Port Serial is FCC and CE approved and RoHS compliant. It is also fully compatible with a wide variety of Windows operating systems and backed by SIIG’s limited five year warranty.


  • Adds two 9-pin RS-232 serial ports to your USB system
  • Works with modems, digital cameras, ISDN terminal adapters, graphics tablets, PDAs, bar code scanners, label printers and other RS-232 serial devices
  • Supports baud rates up to 115Kbps
  • USB bus-powered - no external power adapter required
  • Low power consumption
  • 512-Byte Deep FIFOs for each Port
  • Supports remote wake-up from modem input signals


  • Compliant with Universal Serial Bus Specification, Revision 1.1
  • Chipset: Prolific PL2303HXD
  • RS-232 Serial Interface:
    • Full-duplex transmitter and receiver (TXD and RXD)
    • Six MODEM control pins (RTS, CTS, DTR, DSR, DCD, and RI)
    • 5, 6, 7 or 8 data bits
    • Odd, Even, Mark, Space, or None parity mode
    • One, one and a half, or two stop bits
    • Parity error, frame error, and serial break detection
    • External RS-232 driver power down control
    • Independent power source for serial interface
    • Supports baud rate up to 115Kb/s
  • Product:
    • Dimensions: 5.91" (W) x 2.56" (H) x 1.06" (D)
    • Weight: 0.31 lbs
    • Color: Silver
    • Material: Plastic
  • Interfaces/Port:
    • 1x 4-pin, USB 2.0, Type-B, Female
    • 2x 9-pin, DB9, Serial, RS-232, Male
  • USB Cable:
    • USB 2.0 Type-A (Male) to Type-B (Male)
    • Length: 6ft
  • Environmental conditions:
    • Operating temperature: 32 to 104 degrees F
    • Storage temperature: 14 to 140 degrees F
    • Humidity: < 85% non-condensing
  • Certifications/Standards: FCC, CE, RoHS
  • Warranty: 5 years limited
  • Country of origin: Taiwan


  • Desktop or notebook PC with an available USB port
  • Windows® 8 (32-/64-bit) / 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) / Server 2003 & 2008 (32-/64-bit) / Server 2008 R2 / 2000 / ME / 98SE / 98

Package Contents

  • USB to 2-port Serial
  • Mounting bracket kit
  • USB cable (6ft)
  • Driver CD
  • Quick installation guide

Channel Product Codes

  • Ingram Micro: QR0545
  • Tech Data: 10967433
  • ASI: 133189
  • Synnex: 3440474