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USB to Serial Adapter - Economy Mini - DISCONTINUED

  • Model: ANU232Mi


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** This product has been discontinued and replaced by XS882 **

This low-cost mini USB to Serial adapter is ideal for mobile applications and devices. It is utilizing the low-cost PL2303 chip from Prolific which makes it easy to add a serial port to your desktop or laptop, for general office, commercial and industrial use.

The serial port is automatically configured as an additional COM port with Windows 98, ME, 2000, XP, Vista and some older versions of Linux and Mac. This low-cost adapter is not recommended for Windows 7 and Vista and it is not compatible with Windows 8. It is only recommended for older operating systems.

This adapter will work with most GPS and PDA devices (Garmin, Mallagan, Palm), modems, printers, scanners, digital cameras and office equipment.
The USB to serial adapter allows easy installation of drivers and requires no IRQ, DMA, or I/O port resources which means more devices can be attached to your system without the hassle of device and resource conflicts.

As most low-cost USB to Serial adapters, this adapter is not recommended for use with Windows 7 and Vista. Check instead our Windows 8 / 7 compatible USB to Serial adapter. Also please see why most low-cost adapters are not compatible with Windows 8 / 7.

Overall features
  • Port powered USB to serial adapter
  • Low-cost solution
  • Serial interface: standard 9-pin RS232 male
  • Hexagonal nut stand-offs for connecting thumbscrews
  • Processor: Prolific PL2303HX
  • 2 feet USB extension cable included
  • Wake-up and Intelligent Power Management

Useful optional accessories
(not included)

Null modem adapter
Null modem adapter

DB9 to RJ45 adapter
DB9 - RJ45 adapter

DB9 gender changer
Gender Changer

Part number ANU232Mi
Operating system
  • Windows 98, ME, 2000, XP32, Server 2003
    Since this is a low-cost adapter it has limited compatibility and is not recommended for Windows Vista, Windows 7 and it will not work with Windows 8
  • Mac OS X 8, 9, 10, 10.6
  • Linux
  • Windows CE 5.0
Processor Prolific PL2303HX
RS232 Interface RS232 DB9 Male
RS232 output power ~7.8VDC
USB interface Standard Type A Male
Indication LEDs No
Ports 1-port
Signals TX, RX, RTS, CTS, DTR, DSR, DCD, and RI
Power on pin 9 No
Baud rate 300bps to 115200bps
Parity None, Odd, Even, Mark, Space
Data Bits 5, 6, 7 or 8
Stop Bits One, one and a half, or two stop bits
TX / RX buffer size Configurable 512-byte bi-directional data buffer
- 256-byte outbound buffer and 256-byte inbound buffer; or
- 128-byte outbound buffer and 384-byte inbound buffer
Adjustable USB transfer sizes for TX and RX From 64 bytes to 4096 bytes
Flow Control None, Xon/Xoff, Hardware
COM port accessible by Included virtual COM port drivers
Electrostatic (ESD) protection 600W surge protection, 15KV static electricity protection
Current draw less than 100mA
Interface compliance USB1.1,2.0,3.0, EIA/TIA RS-232
Regulatory compliance FCC, CE and RoHS
Working temp -20°C to 60°C
Warranty 1 year

For alternative USB to serial solutions please see our full selection of USB to Serial RS232 adapters

Quick Tip!

About the Mini USB to Serial Adapter (RS232)

This USB to Serial adapter is as mentioned earlier ideal for laptops and other mobile devices, however it is also a good all-round USB to Serial adapter for most other devices where you need a simple and low-cost USB to serial adapter. The drivers and chipset for this adapter is made by Prolific, a Taiwanese company who makes good all-round products for many consumer data products, however these products are not recommended for professional use in for example industrial, laboratory or mission critical applications.

If you need a USB to Serial adapter for professional use we recommend our Pro grade line of adapters. These serial adapters are made with drivers and a chipset from FTDI which offers highly reliable and high performance products.
The drivers for the Prolific USB serial adapter usually works fine with older operating systems such as Windows 2000 and XP however we have seen several problems with newer operating systems.

After installing the drivers for the Prolific USB to serial adapter a virtual COM port will be created in your operating system's Device Manager. The COM port can be accessed and used as if it was a standard built-in COM port. Notice however as with all serial adapters that there usually is a latency (data delays) when communicating with serial devices. If you wish to avoid these data latencies we recommend using a regular RS232 serial port instead, for example such as a serial RS232 PCI card which can be installed in most desktops.

Be aware that Windows assigns the COM port number to the adapter depending on which COM port number is available in the system. Usually the next available COM port number is assigned to the adapter. If you disconnect the USB serial adapter and after a while re-connect it again it may or may not be assigned the same COM port number, so always check in your operating systems Device Manager to see what COM port number is has been assigned. USB serial adapters with COM port retention exists, these will be assigned the same COM port number each time it is connected.

For alternative solutions and high performance adapters please see our full selection of USB Serial adapters.


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