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USB to Serial RS232 Adapter DB9 Male for Windows 10, 8, 7

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USB to Serial RS232 Adapter DB9 Male for Windows 10, 8, 7

USB-COM-PL - 1-Port RS-232 USB-to-Serial Plugin Adapter no Cable included.

Operating System Compatibility



USB-COM-PL - 1-Port RS-232 USB-to-Serial Plugin Adapter no Cable included.


  • Adds one RS-232 serial port by connecting to a USB port
  • Plugin converter connecting to a USB port conveniently
  • Installed as standard Windows COM port
  • Full RS-232 modem control signals and 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
  • Non-standard baudrates supported
  • LED status indicators for TxD and RxD for easy port monitoring and diagnostic
  • 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 10, Windows 8, Windows 7, Vista, and Linux


Compliance USB 1.0/1.1 compliant, USB 2.0 compatible
Speed 12 Mbps, full-speed USB
FIFO 128 byte transmit FIFO
384 receive FIFO
Serial Interface
Port Type RS-232
Number of Ports 1
Connectors DB9 male
Serial Line Protection
ESD Protection 10KV
Serial Port Speed
Baudrate 300 bps to 921.6k bps
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
Serial Signals
Driver Support
OS Windows 7, Vista, 2003, XP (WHQL certified) and 2000
Linux Kernel 2.4 and up built-in support
Power Supply
Input Bus-powered
No external power adapter required
Chassis Plastic, ABS
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 CE, FCC


RS-232 DB9 Male

RS-232 DB9 Male Connector Pin-outs

RS-232 Signal Pin-outs of DB-9 Male

  Pin Signal  
  1 DCD  
  2 RxD  
  3 TxD  
  4 DTR  
  5 GND  
  6 DSR  
  7 RTS  
  8 CTS  
  9 RI  
Additional Information

Additional Information

UPC 729440690632
Tech Specs UPC Code: 729440690632 Our USB to Serial Device Use FTDI Chip.USBGear.com has been Providing USB Serial Solutions to Industry Leaders since 1997 Our Mini Adapter is the only Adapter that will work with ALL Serial Printers! Including Laser Serial printers and Thermal Serial Printers. These devices are known by many names: USB-Serial adapters, USB-PDA adapters, and USB-RS-232 converters, usb to serial adapter, usb serial port

Customer Reviews 1 item(s)

Great piece of equipment. Worked perfectly for me.
I was looking for a way to again use my Icom prc=1000 computer controlled radio receiver. I found an updated version of the control software but needed a USB to serial port. I found this on due to a search and ordered one. In 5 minutes, I had the receiver running as it did back in windows XP. It installed and operated quickly and solidly on my windows 7 laptop. Great product!!!!
Review by Hank 32 / (Posted on 11/19/2016)