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Short white plastic cable with USB-A and DB9 male ends, LED near USB

IOGEAR

IOGEAR GUC232A 16" USB to DB9 RS-232 serial cable

SKU CH-7WCF-DBCKJ MPN GUC232A

Adds a serial port to a PC or Mac via USB, converting legacy RS-232 devices at up to 230 Kbps with a 16-inch cable

  • TypeUSB to DB9 (RS-232)
  • Length16"
  • Connector Number2
  • Connector Detail1 x USB Male 1 x DB9 Male
  • Terminal GenderMale to Male
  • SpeedUp to 230Kbps
  • Connect legacy serial gear via USB 1.1 or 2.0
  • 16-inch cable reaches nearby ports without strain
  • 230 Kbps throughput handles classic RS-232 devices
  • LED indicator confirms active data transfer instantly
  • Draws only 90 mA from the USB bus

USB to DB9 serial adapter

The IOGEAR GUC232A adds a DB9 RS-232 port to a PC or Mac through a standard USB Type-A plug. It lets you connect legacy serial equipment such as industrial controllers, networking gear or older PDAs without an onboard COM port. The 16-inch cable keeps the dongle close to the host port.

Maximum 230 Kbps data rate

The adapter supports serial speeds up to 230 Kbps, which covers most RS-232 console, telemetry and point-of-sale devices. Higher baud-rate equipment will not operate reliably through this link. The USB 1.1 and 2.0 interface supplies 90 mA to power the converter electronics.

Driver installation then plug in

Install the supplied driver for your operating system before attaching the cable. The DB9 male connector mates directly with a female RS-232 port; no gender changer is included. A built-in LED shows transmit and receive activity for quick link verification.

Highlights

  • Connect legacy serial gear via USB 1.1 or 2.0
  • 16-inch cable reaches nearby ports without strain
  • 230 Kbps throughput handles classic RS-232 devices
  • LED indicator confirms active data transfer instantly
  • Draws only 90 mA from the USB bus

Specifications

BrandIOGEAR
ModelGUC232A
TypeUSB to DB9 (RS-232)
Length16"
Connector Number2
Connector Detail1 x USB Male
1 x DB9 Male
Terminal GenderMale to Male
SpeedUp to 230Kbps
SpecificationsCase: Plastic
Power Consumption: 90mA
FeaturesAdd 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
LED status light for data transfer monitoring
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
Shipping weight0.13 kg
Package size160 × 124 × 23 mm

Questions about this item

How fast will the 230 Kbps serial rate actually run once the cable is plugged into a real machine?

The link negotiates at USB full-speed, so the 230 Kbps RS-232 ceiling is the practical throughput limit for any connected serial device.

What USB standard does the adapter use and what speed does that cap at?

The adapter is USB 1.1 and 2.0 compatible and operates at USB full-speed, which is sufficient for the 230 Kbps serial specification.

What physical space does the 16-inch cable and DB9 connector need to fit?

The 16-inch cable with a standard DB9 male plug requires enough clearance for the connector depth plus the short cable bend radius behind the port.

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