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Black USB-A to male DB9 serial adapter cable, 1.5 in x 16.9 in x 20.8 in, .07 lb

OIKWAN USB to RS232 Adapter FTDI Chipset Male DB9 Black

SKU CH-4PFM-ZDT5P

Converts a USB port to an RS-232 DB9 serial link for industrial gear, networking kit and legacy peripherals using an FTDI FT232RL chipset

  • Product colorBlack
  • Product dimensions1.5 in × 16.9 in × 20.8 in
  • Product weight0.07 lb (0.03 kg)
  • FTDI chipset enables reliable serial communication for industrial equipment
  • Male DB9 connector fits legacy cashier registers, scanners and CNC machines
  • Gold-plated USB-A plug resists corrosion for stable data transfer
  • Broad OS support including Windows 11, Mac OS 8+ and Linux 2.4.0+
  • Lightweight 0.07 lb cable with 16.9 in length for flexible placement

USB-to-Serial Bridge for Legacy Gear

This adapter uses an FTDI FT232RL chip to give a modern USB-A port a male DB9 RS-232 interface. It targets technicians and integrators who must talk to routers, CNC controllers, barcode scanners, label printers or older industrial equipment that still speaks 9-pin serial.

FT232RL Stability on Long Cable Runs

The FT232RL processor maintains reliable signalling across the full 16.9 in cable length without the drop-outs common in cheaper bridge chips. Active lines are RXD, TXD and GND; the remaining pins follow the standard 9-wire pinout so hardware flow control works where the attached device expects it.

Verify Port Gender and Driver Source First

The connector is male DB9, so the mate on your equipment must be female — check the port before ordering. Windows 11 through 7, Mac OS 8 or later and Linux 2.4.0 and later are supported, but the driver must be downloaded from the official FTDI or Cisco site before first use.

How it compares

Measured against everything we stock in Serial & Protocol Converters, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 60% of the 121 comparable items (median $19.99).

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Specifications

Product
Brand nameOIKWAN
Part numberB-9-M-AD
Product colorBlack
Size & build
Product dimensions1.5 in × 16.9 in × 20.8 in
Product weight0.07 lb (0.03 kg)

Questions about this item

Does the FT232RL chip generate noticeable heat when the adapter runs continuously?

The adapter uses an FT232RL chip and draws power from the USB port; its small 0.07 lb form factor produces minimal heat during all-day operation.

Must the host computer have a USB-A port and the target device a DB9 female RS-232 connector?

Yes, the cable has a USB-A male plug on one end and a DB9 male connector on the other, so the host needs USB-A and the serial device needs a DB9 female port.

Will the adapter work with older industrial equipment that uses a standard 9-pin RS-232 interface?

The cable provides a full 9-wire RS-232 pinout (DCD, RXD, TXD, DTR, GND, DSR, RTS, CTS, RI) and supports Windows, Mac OS 8+ and Linux 2.4.0+, matching legacy DB9 gear.

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