9 Pin to USB Adapter – 2022 Buyer’s Guide

The 9 pin is a blast from the past, and the modern USB is everywhere. Where these two connectors meet is an adapter that connects your devices. 

If you have hardware with a DB9 or RS-232 port, an adapter can prevent your functioning devices from becoming paperweights.

What Is a USB to Serial 9 Pin Adapter?

DB9 or 9-pin connector types were once prevalent for PCs and servers. The 9-pin or RS-232 port connected peripheral devices like keyboards, mice, joysticks. Another use was for syncing or sharing files between computers.

Today, the popular USB port has replaced DB9 connectors. However, just because the technology is outdated doesn’t mean the serial-port devices are worthless. 

Enter the 9 pin to USB adapter. You can link any USB-friendly device to your 9-pin serial port, whether it’s old scanners or other equipment.

Best USB to 9 Pin Serial Port Adapter

Let’s waste no time exploring what makes our picks the best.

Tripp Lite Keyspan by USA-19HS 9 Pin to USB Adapter

Tripp Lite Keyspan by USA-19HS 9 Pin to USB Adapter

Tripp Lite Keyspan by USA-19HS 9 Pin to USB Adapter has plug-and-play convenience and doesn’t require an external power source. It supports data transfer rates up to 230 Kbps—which is twice the speed of a standard built-in serial port.

The Tripp Lit adapter is compatible with 32 and 64-bit systems, including Windows (up to 10), Mac OS X (up to Mac OS Big Sur 11.4).

An LED light on the adapter shows activity status at a glance, and the 3-foot USB cable is detachable. It’s also easily transported, weighing only 2 pounds.

HIGHLIGHTS

  • 3-year limited warranty
  • LED status light
  • USB-powered

Check the price on Amazon


Plugable 9 PIN to USB Adapter

Plugable 9 PIN to USB Adapter

The Plugable USB to serial adapter is flexible with a programmable baud rate from 75 bits per second to 128,000 bits per second. It also has plug-and-play ease and doesn’t require an external power source.

The genuine Prolific PL-2303HXD chipset allows for the broadest possible compatibility. Compatible systems include Windows (10, 8, 7, Vista, and XP), Mac, Linux, and other platforms.

HIGHLIGHTS

  • 2-year warranty
  • Seattle-based email tech support
  • USB-powered

Check the price on Amazon


IOGEAR 9 Pin to USB Adapter

IOGEAR 9 Pin to USB Adapter

IOGEAR USB to serial adapter includes a 16-inch cable with USB 1.1 and USB 2.0 compatibility. In addition, an LED status light helps users monitor data transfer at a glance. The interface works with PC or Mac, but the adapter is best for Windows 8 or prior.

The IOGEAR 9 pin to USB adapter supports remote wake-up and power management with a 921.6 Kbps data transfer rate. The IOGEAR GUC232A uses a Prolific 2303HXD chipset and has a power consumption rating of 90 milliamps.

HIGHLIGHTS

  • 3-year limited warranty
  • LED status light
  • 16-inch cable

Check the price on Amazon


Micro Connectors, Inc. 9 Pin to USB Adapter

Micro Connectors, Inc. 9 Pin to USB Adapter

The Micro Connector, Inc. USB adapter has dual serial ports. While you won’t always need to plug in two devices, having an extra RS-232 port can be handy. Micro Conductor, Inc.’s adapter is port-powered rather than requiring an external source.

The included CD software driver ensures compatibility with Windows (10, 8, 7, XP, and Vista), Linux, and Mac systems. It supports both 64 bits or 32 bits and uses a MosChip chipset.

HIGHLIGHTS

  • 2-year warranty
  • USB-powered
  • Dual serial ports

Check the price on Amazon


Benfei 9 Pin to USB Adapter

Benfei 9 Pin to USB Adapter

Hook your Benfei USB to RS232 (9 pin) adapter up to any DB9-equipment and let the 1 Mbps data transfer rate begin. The tinned copper conductor and triple-shielding ensure a stable transfer rate. Installation is simple with a one-time driver, and no external power source is necessary.

The Prolific PL-2303 Chipset enables reliable compatibility, including Windows (10, 8, 7, XP, Vista, 2000, 98), Mac (OS 8 and higher), Linux (2.4 and higher), and other platforms.

Benfei’s adapter supports an auto wake-up function and automatic handshake.

HIGHLIGHTS

  • 18-month warranty
  • USB-powered
  • Triple-shielded

Check the price on Amazon


Sabrent 9 Pin to USB Adapter

Sabrent 9 Pin to USB Adapter

Sabrent USB to serial adapter uses the Prolific chipset to connect various systems, including 32 and 64 bit. It’s compatible with Windows (2000/ME, 98SE, XP, Vista, 7, 8/8.1, 10 and higher), Mac OS X 10.6 and higher), and Linux (2.4 and higher). In addition, the USB is 1.1 and 2.0 compliant.

The plug-and-play setup is quick, and the adapter is USB port-powered. The baud rate is 300 bps to 1 Mbps. It also supports automatic handshake mode.

HIGHLIGHTS

  • Lifetime manufacturer warranty
  • USB-powered
  • 2.5 ft cord

Check the price on Amazon


Solve Your Port Problems

Similar adapters you might need are USB-C to USB adapters and IDE To USB adapters. Now you can go and “improvise, adapter, overcome”.

Those are our picks for the best USB to 9 pin serial port adapter. We hope our list helped you find the USB adapter that solves your port problems.