Prolific USB to Serial USB adapter Cable RS232 DB-9 Male 3ft converter

MFG Part Number: CA-232-1MB
Prolific Chip serial adapter Works with Windows 7 and Vista 32-bit and Vista 64-Bit as well as XP Home and XP Pro. The USB converter is housed in a strong molded enclosure.
Key features
  • Works with cellular phones, PDA, Digital Cameras, Modems, or ISDN terminal adapters
  • Support Microsoft Windows and Mac OS 8.6 or higher (Minimum Mac G3 or above)
  • Over 230kbps data transfer rate
  • 96 byte buffer each for upstream and downstream data flow
Linux OSX 10 Windows Vista Windows XP
4 Review(s)

Prolific USB to Serial Adapter for POS and Control Devices

The Prolific chip in this USB converter is housed in a strong molded enclosure designed for use in rugged application areas. USB adds a Windows serial COM port via its connection and can be configured to work with RS-232 peripherals. Plug and Play features allow easy serial port expansion and requires no IRQ, DMA, or I/O port resources. It supports data transfer rates of up to 230k bps. No external power supply is required as the Prolific USB to serial converter takes its power from the USB bus.

The USB to Serial Converter is RoHS compliant and works with Windows 7, Vista 32 / 64-bit as well as XP Home / Pro. Virtual COM port (VCP) drivers cause the USB device to appear as an additional COM port available to the PC.

Our drivers are "signed" by Microsoft!

Provides a single DB-9 serial port for connecting to applications such as:

  • PDA devices
  • Modems
  • Digital Cameras
  • Standard Serial Devices
  • Barcode Readers
  • Card Reader
  • Palm II&V
  • Graphic Tablets
  • Label Printers

Now you can easily connect your Magellan GPS receiver to the USB port of your PC with this DB-9 to USB adapter cable. Magellan data cable accessories come standard with a DB-9 connector, compatible with the DB-9 port on your computer. If your computer does not come equipped with a DB-9 port, simply plug-in this USB serial accessory adapter and connect your Magellan GPS receiver via your USB port to download maps and other software.

The PL-2303 Prolific serial adapter is your smart and convenient accessory for connecting RS-232 serial devices to your USB-equipped Windows host computer. It provides a bridge connection with a standard DB 9-pin male serial port connector in one end and a standard USB plug on the other end. You simply attach the serial device onto the serial port of the cable, and then plug the USB connector into your PC USB port. It allows a simple and easy way of adding serial connections to your PC without traditional port configuration.

This USB to Serial adapter is ideal for serial connections for up to 1Mbps of data transfer rate. Furthermore, USB does not require any IRQ resource, more devices can be attached to the system without the hassles of device and resource conflicts.

Finally, the PL-2303 USB to Serial adapter is a fully USB specification compliant device and therefore supports advanced power management such as suspend and resume operations as well as remote wakeup. The Prolific USB serial cable adapter is designed to work on all Windows operating systems.

Prolific USB to Serial Specifications

  • Smart USB to RS-232 (DB 9-pin male serial port) interface
  • Supports various serial devices like modems, PDAs, cellular phones, digital cameras, card readers, and more.
  • Easy Plug and Play Installation
  • Full Compliance with the Universal Serial Bus Specification v1.1
  • Supports the standard RS-232 Serial Interface
  • Supports automatic handshake mode
  • Over 1Mbps data transfer rate
  • Supports Remote Wake-up and Intelligent Power Management
  • Provides Dual Buffers for upstream and downstream data transfer
  • No IRQ resource required
  • Bus Powered , no separate power supply or battery required System Requirements
  • Windows 98, Windows ME, Windows 2000, or Windows XP operating system
  • AMD or Intel Pentium 133MHz or better based computer
  • USB 1.1 or higher port
  • USB to RS-232 (Serial Port) Cable Adapter
  • USB to RS-232 Driver Utility Disk

Serial Adapter Features

  • Supports automatic handshake mode
  • Works with cellular phones, PDA, digital cameras, modems, or ISDN terminal adapters
  • Supports remote wake-up and power management
  • Frees your RS-232 port for other uses
  • Support Microsoft Windows and Mac OS 8.6 or higher (Minimum Mac G3 or above)
  • Over 230kbps data transfer rate
  • 96 byte buffer each for upstream and downstream data flow
  • No IRQs, no IRQ conflicts
  • Easy installation 


Type USB to Serial Converter
Bus Interface Universal Serial Bus (USB) version 1.1
Power USB Bus power
Connector One USB A to DB9M connector
Number of Port 1 x RS-232
Cable Length 2 feet
OS Support
Microsoft Windows 9x/ME, Windows 2K/XP
Mac Mac OS 8.6 or higher (Mac Hardware: Mac G3 or above)
Regulatory Approvals
Hardware CE, FCC
Package Content
Product CB12BB USB to Serial Converter
CD Software & driver CD
Manual User manual
Warranty Period 1 Years

Important Technical Information: 
Windows 98SE/ME/2000/XP/Vista laptops and desktop systems with USB1.0, 1.1 or USB 2.0 support USB Serial Adapter Converter with 6ft. cable THIS ITEM USES PROLIFIC CHIPSET! Support: How do I change to a different COM setting? The way to change the COM port is by changing the I/O range for it in Device Manager. Right-click on "My Computer" Click the "Device Manager" tab. Click the "+" by "Ports" Select "USB to Serial Port (COM5)" Click the "Properties" button Click the "Resources" Tab. Uncheck the box that says "Use automatic sttings". Select the "Input/Output range" Click the "Change Settings " button. Click the little arrows until you find an appropriate setting. "02E8-02EF" should give you a COM4 setting after you restart the computer. Make sure to click "OK" on all screens. Use the following settings to get the following COM ports: COM1 - 3F8h COM2 - 2F8h COM3 - 3E8h COM4 - 2E8h 

PL2303-Win98-2000-XP-Driver-Installer (download here)

PL-2303-Vista-Driver-Installer(download here)

USB TO Serial Adapter Vista User Guide(download here)

  • Compatibility:
  • USB 2.0 (backward compatible) and EIA/TIA RS-232C standards

  • Power Source:
    Port power from USB port

  • Current Consumption:
    Under 100mA

  • Baud Rates:
    300 to 128,000bps (auto-sensing and self-adjusting)

  • Distance:
    USB side: 10ft (3m); RS-232 side: 16ft (5m)

  • Connectors:
    USB side: Type A Female; RS-232 side: DB-9 Male

  • LEDs:
    TX, RX and Power

  • Dimensions 0.6 x 1.4 x 2.2 in (15 x 35 x 55 mm) (excluding cable)
  • Cable Length: 3.3ft (1m)
  • Weight:2.6 oz (73 g)>
  • Operating Temperature: 32°F to 95°F (0°C to 35°C)
  • Operating Humidity: Up to 90% RH (no condensation) 


RS-232 Side (DB-9 Male Connector / DTE): 
Pin Function Description

  1. DCD Data Carrier Detect 
  2. RX Receive Data 
  3. TX Transmit Data 
  4. DTR Data Terminal Ready 
  5. GND Ground (Signal) 
  6. DSR Data Set Ready 
  7. RTS Request to Send 
  8. CTS Clear to Send 
  9. RI Ring Indicator 


  • DB-9 Pin Assignment: 1 2 3 4 5 6 7 8 9 
  • DB-25 Pin Assignment: 8 3 2 20 7 6 4 5 22 

Install Program for Vista 32/64 bit XP ME 98 2000 2003 2008 and Windows 7
PL-2303 USB to Serial Bridge (H, HX, X) Installshield Driver Setup Program
Installer & Build date:
Windows 98/ME Driver: v2.0.0.19
Windows 2000/XP/Server2003 (32-bit) Driver: v2.0.5.111
Windows Vista/Server2008 (32 & 64-bit) Driver:
Language Support: English (default), Chinese (Traditional), Chinese (Simplified), Japanese 


Part NumberCA-232-1MB
Good product
Dr Electron

Works as advertised .

Awesome product
Jamie L Bell

Product arrived as expected in great condition.

Prolific USB to Serial Adapter
Larry A Lamar

I've used smaller version of this product that were sold by Best Buy; I loved the flexibly of this product for us with connecting to console ports on network equipment that also require a Cisco console cable.

Prolific USB to Serial Adapter Software Drivers

I've used smaller version of this product that were sold by Best Buy; I loved the flexibly of this product for us with connecting to console ports on network equipment that also require a Cisco console cable.The best place to get the latest drivers can be found for both Mac OS and Windows can be found at:[...], just sign in as guest.I hope this helps.

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