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Industrial 4-Port RS-232 USB-to-Serial Adapter, Compact Metal Case with 1m Octopus Cable, DIN rail


Quick Overview

Din Rail mountable Industrial 4-Port RS-232 USB-to-Serial Adapter, Compact Metal Case with 1m Octopus Cable.

Availability: In stock



Designed to make serial port expansion very simple this RS232 serial adapter connects to a USB port on your computer or USB hub and instantly adds 4 serial communication ports to your system.

Automatically detected and installed, the USB2-4COM-M-CBL serial adapter presents no IRQ & COM port conflicts because it doesn’t require any additional IRQ, DMA, memory as resources on the system. The RS-232 port functions as native Windows COM port, and it is compatible with Windows serial communication applications.


  • Adds four industrial RS-232 serial ports by connecting to a USB port
  • Compact size box can be mounted to DIN rail conveniently
  • Extension cable fanning out to 4 DB9 serial ports
  • Installed as standard Windows COM port
  • SECC metal chassis with DIN rail bracket
  • Hardware/software flow control
  • RS-232 data signals: TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
  • High speed serial port with the baud rate up to 921.6K bps
  • 128 byte transmit FIFO & 384 byte receive FIFO
  • Non-standard baudrates supported
  • LEDs of Power, TxD and RxD for easy port monitoring and diagnostics
  • Serial port protected with surge protection of 10KV
  • Powered by USB port, no external power adapter required
  • Easy plug and play installation and RS-232 device connection
  • COM port number assigned can be changed to any COM port number required
  • Works with USB 1.1 & 2.0 host port
  • Supports Windows 8, Windows 7, Vista, 2003, XP, 2000 and Linux


  • Compliance: USB 1.1/2.0 compatible
  • Speed: 480 Mbps, hi-speed USB
  • FIFO: 128 byte transmit FIFO, 384 receive FIFO
  • Port Type: RS-232
  • Number of Ports: 4
  • Connectors: DB9 male
  • Extension cable: DB37-to-4 DB9 cable, 30cm , or DB37-to-4 DB25 cable,30cm
  • ESD Protection: 10KV
  • Baudrate: 300 bps to 921.6k bps
  • Data Bits: 5, 6, 7, 8
  • Stop Bits: 1, 1.5, 2
  • Parity: None, Even, Odd, Space, Mark
  • Flow Control: RTS/CTS, XON/XOFF
  • RS-232 Signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, RI
  • Driver Support OS: Windows 7, Vista, 2003, XP (WHQL certified) and 2000, Linux
  • Kernel and up built-in support
  • Power Supply: Input, Bus-powered, No external power adapter required
  • Chassis: SECC metal chassis with DIN rail bracket
  • 122.22mm(L) x 69.85mm(W) x 31.75mm(H)


  • Operating Temperature: 0 to 55 °C (32 to 131 °F)
  • Operating Humidity: 5 to 95% RH
  • Storage Temperature: -20 to 75 °C (-4 to 167 °F)

Safety Approvals

EN55022 Class B, EN55024, EN61000-3-2, EN61000-3 IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11. CISPR PUB. 22 and FCC Part 15 Class B.

Additional Information

UPC 729440690779
Manufacturer SerialGear
Length No
Color Black
OS Support Linux, Win 10, Win 7, Win 8/8.1, Win Vista, Win XP

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