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Cutting Edge Electronics since 1982
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2-Port USB to DB9 Serial FTDI Adapter Cable with COM Retention (M/M), 6 ft.

Model # U2090062

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Connect 2 devices with 9-pin RS-232 serial ports to the USB-A port on your computer, laptop or tablet. Recommended for connecting modems, digital cameras, PDAs and ISDN terminals.
The U209-006-2 2-Port USB to DB9 Serial FTDI Adapter Cable (M/M) allows you to connect two 9-pin RS-232 serial peripherals to a device with a USB-A port. Recommended for connecting a modem, digital camera, PDA or ISDN terminal to your computer, laptop or tablet, this cable supports data transfer speeds up to 225 Kbps-basically twice as fast as a built-in serial port. No external power source is required. The compact six-foot cable tucks away in your backpack or laptop bag for use anywhere.

The hot-swappable U209-006-2 with built-in FTDI FT232RL chipset offers COM retention. It automatically reassigns the same COM port values to each port in case the cable is disconnected or the system is rebooted.

Premium foil and braid shielding delivers reliable, error-free signal quality and protection from EMI/RFI line noise. Molded nickel-plated connectors with gold-plated contacts ensure excellent conductivity. Integral strain relief ensures the cable and connectors last a long time. Works with Windows, Mac and Linux computers.
Connects 2 DB9 Devices to a USB-A Device

  • Recommended for connecting a modem, digital camera, PDA or ISDN terminal to your computer, laptop or tablet
  • Supports data transfer speeds up to 225 Kbps-twice as fast as a built-in serial port
  • No external power source required
  • Portable 6 ft. design fits perfectly into laptop bag
  • COM retention for automatic reassigning of COM values to ports in case of disconnection or reboot
  • Integrated FTDI FT232RL chipset

First-Rate Construction for Superior Signal Transfer
  • Premium foil and braid shielding for EMI/RFI noise protection
  • Molded nickel-plated connectors with gold-plated contacts for optimal signal quality
  • Integral strain relief for long life
  • Flexible PVC jacket easy to install in tight spaces

Broad Compatibility
  • Compatible with Windows, Mac and Linux operating systems

System Requirements
  • Computer or other device with available USB port and Windows XP or later, Mac OS X 10.3 and later, or Linux operating system

Package Includes
  • U209-006-2 2-Port USB to DB9 Serial FTDI Adapter Cable (M/M), 6 ft.
  • Driver CD
  • Owner's manual


  • Supports data transfer speeds up to 225 Kbps
  • Premium foil and braid shielding reduces EMI/RFI line noise
  • Compatible with Windows®, Mac® and Linux® devices
  • No external power source required
  • Integrated FTDI FT232RL chipset
UPC Code 037332198303
Cable Length (ft.) 6
Bus Powered Yes
Cable Jacket Rating VW-1
Color Black
Material of Construction PVC
Shipping Dimensions (hwd / in.) 2.00 x 4.90 x 5.00
Shipping Weight (lbs.) 0.40
Unit Packaging Type Box
Unit Weight (lbs.) 0.13
Operating Temperature Range 32 to 104 F (0 to 40 C)
Storage Temperature Range 14 to 131 F ( -10 to 55 C)
Relative Humidity 5% to 90% RH, Non-Condensing
BTUs 1.7 BTU/Hr
Power Consumption (Watts) 0.5
Ports 2
Side A - Connector 1 USB A (MALE)
Side B - Connector 1 (2) DB9 (MALE)
Connector Plating Nickel
USB Specification USB 2.0 (up to 480 Mbps)
Driver Required Yes
Technology Serial (RS232); USB
Certifications Tested to CE, FCC, RoHS, REACH, WEEE
Product Warranty Period (Worldwide) 3-year limited warranty

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy, and expensive and you probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Questions or Comments?
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