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USB Adapter

USB to Serial RS-232 Adapter

16 in Cable DB-9 Plug-N-Play RS-232

UPC: 672792550065

Sale price$24.95

The USB to Serial RS-232 Adapter provides one RS-232 Serial (DB-9 male) connector via one standard USB port at a data transfer rate of up to 230Kbps.

Hassle Free Serial setup

It provides a quick, simple, and cost-effective solution and is ideal for various communication and automation applications. This makes the USB interface transparent to serial peripherals, allowing them to easily interface with USB computers and eliminates the setup hassle found with traditional serial port connections.

Supports older equipment USB 1.1/2.0

Convert older serial equipment to USB standards. Whether it is an older AV system or legacy server, connect to newer USB interfaces with the USB to Serial RS-232 adapter. This means it is compatible with USB 1.1 and USB 2.0 devices.

  • Add one serial port to your PC or Mac via USB connector
  • Converts older serial devices to USB connection
  • USB 1.1 and USB 2.0 compatible 
  • 16" cable length
  • Supports the RS-232 Serial interface
  • Supports automatic handshake mode
  • Up to 230Kbps data transfer rate
  • Supports remote wakeup and power management
  • Provides a 96 byte buffer for each upstream and downstream data transfer
  • Easy Installation
  • No IRQ required
  • For PC Users
  • Windows® 10, Windows® 8.1, Windows® 7
  • Available USB port
  • For Mac Users
  • Mac OS X 10.3.9 through 10.14
  • Available USB port


  • GUC232A USB to Serial adapter cable
  • User Manual
  • Warranty/Registration Card

GUC232A Mac OS Driver Download

Mac OS 10.14.x (Mojave)
Mac OS 10.15 (Catalina)
MAC OS 11x (Big Sur)
MAC OS Monterey

GUC232A Windows Driver Download

Windows 8.1 32-bit
Windows 8.1 64-bit
Windows 10 32-bit
Windows 10 64-bit
Windows 11

Need more help with this product? Visit IOGEAR Knowledge Base

Power Consumption90mA
On Line1
Operating Temperature41 to 104 degree Fahrenheit
Storage Temperature-4 to 140 degree Fahrenheit
USB SpecificationUSB 1.1 compliant
Transfer RateUp to 230Kbps
Humidity20-80% RH, (Non Condensing)
Cable Length14 in. (40.64 cm.)
Power ConnectionsBus powered
International - LanguagesEnglish
POP Information
10'' Peg Hook5
6'' Peg Hook3
Unit Dimensions
Height.6" (1.6cm)
Length16.6" (42.2cm)
Width1.3" (3.3cm)
Unit Package Dimensions
Height6.2" (15.7m)
Width4.9" (12.5cm)
Depth1.6" (4.1cm)
Master Carton
Height8.1" (20.6cm)
Width10.9" (27.6cm)
Depth15.5" (39.4cm)
Master Carton Qty.24
Master Carton Wt.7.9lbs (3.6kg)
Unit Pack Wt..30 lbs (.14kg)
Unit Wt..10lbs (.05kg)

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