We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black USB-A to DB9 serial adapter cable with three status LEDs

BFKK

BFKK USB232A-B-A USB to Serial RS232 DB9 Adapter Cable with 3 LED Indicators

SKU CH-YZQ4-PCQDH

Connects legacy DB9 serial devices to USB-A ports with three status LEDs for transmit, receive and power monitoring

  • Connects legacy RS232 devices to modern USB ports
  • Three status LEDs show power, transmit and receive activity
  • Supports baud rates up to 921.6 Kbps with 512 byte FIFO
  • Works with Windows 11, macOS 15 and Linux systems
  • 91 cm cable length for flexible device placement

USB to RS-232 DB9 Adapter for Legacy Hardware

This USB Type-A to serial adapter connects 9-pin DB9 equipment such as barcode scanners, PLCs, medical devices, oscilloscopes and scales to modern computers lacking native serial ports. It is built for IT professionals and industrial environments that must keep older instrumentation running on current Windows 11, macOS 15 and Linux systems. The 91 cm cable length suits bench and rack setups. Buyers needing parallel, USB-B or custom pin-out cables should look elsewhere.

Verify OS Version and Target Device Pin-Out Before

Confirm the host machine runs Windows 11, macOS 15 or a supported Linux distribution so the PL2303-GC driver loads correctly. Check that the legacy device uses a standard DB9 male connector and does not rely on a proprietary pin arrangement, as the adapter may not support certain serial printers, mice or keyboards with unique wiring. Ensure the application can operate within the 921.6 Kbps maximum baud rate and 5/6/7/8 data-bit settings provided.

Three Status LEDs and Fixed Cable Simplify

Green TX, yellow RX and red power LEDs give immediate visual confirmation of link activity and power presence without opening a terminal window. The integrated 91 cm cable removes the need for a separate USB cord and reduces connector strain in tight panels. No configuration software or licence key is bundled; the device relies on standard in-box or downloadable drivers for the PL2303-GC chipset (VID_067B&PID_23A3).

Highlights

  • Connects legacy RS232 devices to modern USB ports
  • Three status LEDs show power, transmit and receive activity
  • Supports baud rates up to 921.6 Kbps with 512 byte FIFO
  • Works with Windows 11, macOS 15 and Linux systems
  • 91 cm cable length for flexible device placement

Specifications

No published specifications for this item yet.

Questions about this item

Does the USB232A-B-A include the driver CD or must I download the PL2303-GC driver separately?

The adapter uses the PL2303-GC chipset (VID_067B&PID_23A3) which is supported natively by Windows 11, macOS 15 and Linux, so no separate driver download is required for those systems.

Should I choose the 3 ft cable or a longer version for connecting a PLC in a cabinet?

Only the 3 ft (91 cm) length is offered for this model; if the PLC is farther away you would need a separate USB extension cable.

Will the 921.6 Kbps maximum baud rate be reached when I connect an industrial barcode scanner to a Windows 11 laptop?

The hardware supports up to 921.6 Kbps with a 512 byte FIFO, but the actual throughput depends on the scanner's own serial settings and the USB host controller performance.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.