Connects an RS-232 (DB9) Serial Device to the USB-C™ Port on Your Computer or Tablet

Make your 9-pin serial peripherals compatible with the USB-C port on your computer, tablet or smartphone with Tripp Lite’s USB-C to DB9 Serial Adapter Cable. The U209-005-C features a DB9 (male) connector that plugs into your serial device and a USB-C (male) connector that plugs into your USB-C device. Use this adapter cable to connect barcode scanners, networking equipment, ISDN terminals or legacy digital cameras and camcorders to your computer, tablet or smartphone.

Typical Applications

  • Using legacy peripherals with a USB-C computer
  • Connecting a barcode scanner or other point-of-sale device to a USB-C port on a laptop
  • Connecting network equipment, such as routers and switches, to a computer

Doubles the Speed of a Built-In Serial Port

Better than a built-in serial port, the U209-005-C transfers data twice as fast—up to 230 Kbps. This five-foot cable is also portable. It’s small enough to fit in your laptop bag and does not require external power.  

Promotes Dependable Signal Transfer


Quality construction provides reliable, error-free signal transfer. The U209-005-C features twisted 28 AWG data lines and 24 AWG power lines with premium shielding for protection from EMI/RFI interference. Molded nickel-plated connectors with gold-plated contacts ensure excellent conductivity. Integral strain reliefs and a flexible PVC jacket provide durability for a long service life.

Tripp Lite U209-005-C Product Summary

  • Connects an RS-232 (DB9) serial device to a USB-C device
  • Supports data transfer speeds up to 230 Kbps
  • Compact 5 ft. length for portability; does not require external power
  • Compatible with Windows, Mac, Linux and Android devices with USB-C port

What’s in the Box

  • U209-005-C USB-C to DB9 Serial Adapter Cable (M/M), 5 ft. 
  • Owner’s Manual