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Black USB-A female to DB9 male serial adapter cable

STARTECH

STARTECH ICUSB232PRO USB to RS232 serial cable

SKU CH-1NS3-79DCA MPN ICUSB232PRO

Adds an RS-232 serial port via USB with COM port retention and a 920 Kbits/sec transfer rate

  • TypeCable Connectors
  • ColorBlack
  • Connector Number2
  • Connector DetailConnector Types: 1 - DB9 Male Connector Types: 1 - USB A Fem
  • SpecificationsMaximum Data Transfer Rate: 920 Kbits/Sec Hardware Requireme
  • FeaturesCOM port settings are retained for serial devices plugged in

Style 921.6 Kbps Baud Rate

Struck-through versions exist but are not stocked here.

  • Add a serial port via USB with COM port retention
  • Prolific PL-2303 chipset supports 920 Kbits/sec transfer
  • DB9 male connector links to legacy RS-232 equipment
  • USB 1.1 powered — no external adapter required
  • Retains COM settings when moved between USB ports

USB to RS232 adapter for legacy serial equipment

The ICUSB232PRO adds a DB9 male serial port to a laptop or desktop through a USB Type-A connection. It is intended for technicians and engineers who must configure or monitor industrial, networking or point-of-sale hardware that still relies on RS-232 signalling. The cable draws all required power from the host USB port so no external supply is needed.

Sustained throughput at 920 Kbits per second

The Prolific PL-2303 chipset maintains the rated 920 Kbits/sec data rate continuously rather than only in short bursts. COM port settings are retained when the adapter is moved between different USB ports, so long configuration sessions do not require re-entry of parameters. The link remains stable across the full USB 1.1 bandwidth envelope.

Passive cooling with no fan noise

Because the adapter is powered entirely from the USB bus, power draw stays within the port’s standard limit and no active cooling is required. The moulded black cable assembly runs silently and stays cool during normal operation. Its lightweight construction makes it practical for field service kits where space and weight are constrained.

Highlights

  • Add a serial port via USB with COM port retention
  • Prolific PL-2303 chipset supports 920 Kbits/sec transfer
  • DB9 male connector links to legacy RS-232 equipment
  • USB 1.1 powered — no external adapter required
  • Retains COM settings when moved between USB ports

Specifications

BrandStarTech.com
ModelICUSB232PRO
TypeCable Connectors
ColorBlack
Connector Number2
Connector DetailConnector Types: 1 - DB9 Male
Connector Types: 1 - USB A Female
SpecificationsMaximum Data Transfer Rate: 920 Kbits/Sec
Hardware Requirement: A PC with an available USB 1.1 port
Operating System: Windows 98 SE, ME, 2000, XP, Vista
FeaturesCOM port settings are retained for serial devices plugged into different USB ports
Draws power from USB port. No external power needed
Easy to setup and install
Lightweight and portable cable is excellent solution for laptop or mobile application
Provides dual buffers for upstream and downstream data transfer
Supports automatic handshake mode
Supports data transfer rates of up to 920kpbs
Supports remote wake up and power management control
Shipping weight0.11 kg
Package size174 × 140 × 33 mm

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Questions about this item

How much heat or noise does the ICUSB232PRO generate when left connected all day?

It draws power directly from the USB port with no external supply and contains no fan, so it runs silently and produces negligible heat during continuous use.

What must my computer already have for this adapter to work?

An available USB 1.1 port and a supported operating system such as Windows 98 SE, ME, 2000, XP or Vista are required.

Will the COM port setting stay the same if I move the cable to a different USB port on my older PC?

Yes, the Prolific PL-2303 chipset provides COM port retention so the assigned port number follows the adapter across USB ports.

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