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Black USB-A male to DB9 male serial cable, five feet long

Tripp Lite

Tripp Lite U209-000-R 5 ft USB-A to DB9 serial cable

SKU CH-CZBK-5NNCX MPN U209-000-R

Connects a DB9 serial device to a USB-A port on Windows, Mac, Linux or Android 3.2+ without external power

  • Connector count2
  • Connector details1 x USB A (Male) to 1 x DB9 (Male)
  • Connector genderMale to Male
  • Product typeOthers
  • Product colorBlack
  • Overall length5 ft (1.52 m)
  • Connect RS-232 devices via USB without external power
  • 5 ft cable links USB-A male to DB9 male connectors
  • Works with Windows 2000 through 10, Mac OS X 10.6 to 10.12, Linux Redhat 7.3 to 9.0
  • Supports Android tablets and phones with USB Host Mode 3.2 and above
  • RoHS compliant with included driver CD and three-year limited warranty

Five-foot USB-A to DB9 serial adapter

This five-foot cable converts a USB-A port into a male DB9 RS-232 connection. It draws power from the USB bus so no external supply is needed. The adapter works with Windows 2000 through 10, Mac OS X 10.6 through 10.12, Linux Redhat 7.3, 8.0 and 9.0, and Android devices with USB host mode from version 3.2. A driver CD and manual are included in the package.

Suits legacy gear and mobile diagnostics

Technicians who need to talk to modems, mobile computers, cameras or industrial equipment over RS-232 will find the cable straightforward. It is not for users who require a USB 2.0 or 3.0 data rate, nor for devices that need a female DB9 or a 25-pin connector. Buyers without USB host support on their Android tablet or phone cannot use the mobile function. Anyone needing galvanic isolation or longer reach should look at other solutions.

Handles standard serial workloads within five feet

The 1.1 interface provides enough bandwidth for typical console, telemetry and point-of-sale traffic at common baud rates. Shielded construction helps reject noise in electrically noisy cabinets. The five-foot length limits placement flexibility in larger racks or across workbenches. Runs out when the host lacks a compatible driver or when the target device demands signalling voltages outside standard RS-232 levels.

How it compares

Measured against everything we stock in RS-232 Serial Cables, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 64% of the 93 comparable items (median $21.99).

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Specifications

Product
Brand nameTripp Lite
Model nameU209-000-R
Product typeOthers
Product colorBlack
Ports & slots
Connector count2
Connector details1 x USB A (Male) to 1 x DB9 (Male)
Connector genderMale to Male
Size & build
Overall length5 ft (1.52 m)
Shipping weight0.13 kg
Package size152 × 102 × 38 mm

Questions about this item

Does my computer need a USB-A port to use the U209-000-R?

Yes, the adapter plugs into a USB-A male connector on the host computer or Android device with OTG support.

Will the DB9 male connector fit the RS-232 port on my legacy modem?

The 9-pin DB9 male end matches standard RS-232 serial ports found on older modems and industrial equipment.

How can I confirm the cable is recognised after plugging it in?

Check Device Manager on Windows or run lsusb on Linux; the adapter should appear as a new COM or ttyUSB port.

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