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Black USB-A to DB9 serial adapter cable with moulded connectors and thumbscrews, 6.6 ft length

STARTECH

STARTECH 6.6ft USB to Serial Adapter Cable USB-A to DB9 RS232

SKU CH-16DY-V2YWE

Connects USB-A devices to DB9 RS232 serial ports with FTDI chip and ESD protection

  • 6 ft cable gives flexible placement for serial devices
  • FTDI IC ensures reliable RS-232 data transfer
  • COM port retention keeps settings after reboot
  • Interchangeable screws and nuts secure DB9 connections
  • ESD protection guards the adapter from static damage

USB-A to DB9 RS232 Adapter Cable

This 6.6 ft cable converts a USB-A port into a DB9 serial connection for legacy equipment. It uses an FTDI chipset with ESD protection and supports COM port retention across reboots. The adapter targets technicians and engineers who maintain industrial, networking or point-of-sale hardware that still relies on RS232 interfaces.

Bundled Hardware and Documentation

Two DB9 nuts are included so the connector can be secured as screws or nuts depending on the panel. A quick-start guide walks through driver installation on Windows, macOS and Linux without requiring additional downloads. The accessories eliminate the need to source separate mounting hardware or hunt for the correct driver package.

Installation Notes and Common Issues

The cable is recognised as a virtual COM port once the FTDI driver loads; most modern operating systems install it automatically. Problems usually appear when the assigned COM number conflicts with existing ports or when the DB9 gender does not match the target device. Verifying the port assignment in Device Manager or dmesg resolves the majority of connection failures.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $30.99
Pricier than about 78% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Brand nameStarTech
Size & build
Shipping weight0.45 kg
Package size25 × 25 × 25 mm

Questions about this item

Will the FTDI chipset inside this adapter need a firmware update or driver reinstall after a major OS upgrade?

The FTDI IC uses standard in-box drivers on Windows, macOS and Linux, so normal OS updates keep it working without manual firmware steps.

What is the first limitation you hit when the cable runs at maximum baud rate continuously?

The RS232 interface caps sustained throughput at 232 kbps, so the serial line itself becomes the bottleneck before the USB-A host or cable length.

Does the adapter draw enough power from the USB-A port to stay cool during all-day industrial logging?

It is bus-powered from the USB-A port with built-in ESD protection and no active cooling, so heat stays negligible during continuous operation.

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