UT-2003B, 8-ports USB to RS-232 HUB, USB Cable Converters, VCC, DATA+, DATA-, GND and FG

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UT-2003B, 8-ports USB to RS-232 HUB, USB Cable Converters, VCC, DATA+, DATA-, GND and FG





conforming to USBV1.0, 1.1 and 2.0 and EIA RS-232

USB signals


RS-232 signals


Working mode

asynchronous point-to-point

Direction control

adoption of automatic data stream control for automatic recognition and

 control of data transmission direction

Baud rate

300-921.6Kbps, automatic detection of the transmission rate of the serial interface signal

Transmission distance

5 meters for RS-232 and less than 5 meters for USB

Interface protection

+-15KV electrostatic protection

Interface forms

B interface female connector and DB9 male connector for USB

Signal indication

9 indicator lights for Power (PWR), Send (TXD) and Receive (RXD)

Transmission media

twisted-pair cable or shielded cable



Working environment

-40 to 85, relative humidity 5% to 95%

Supported systems

Windows95/98/2000/XP/Vista and IMAG are supported

Power supply

Both BUS and external power supply are supported





With rapid development of computer industry, USB is taking the place of various kinds of traditional low speed peripheral interfaces. However, RS-232 interface designs are still used in many of the important facilities under current industrial environment, therefore, converter is used by many users to implement the data transmission from USB of a computer to RS-232 equipments.

UT-2003B is a universal USB/RS-232 interface converter. No external power supply needed. Compatible with USB and RS-232 standards, UT-2003B is capable to perform the conversion from single-ended USB signal into UART signal of RS-232. DB9 male connectors are used for connection from RS-232 interface. The unique I/O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically. The converter is plug-and-play. All these features ensure a universal application on all the existing communication software and hardware interfaces.

The data communication rate can be as high as 300-921.6Kbps by the point-to-point communication by UT-2003B interface. Power indicator light and data traffic indicator light are also available with the converter for malfunction indication. Conversion from USB to RS-232 is supported.


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Mr. Longzhi Liang (Sales Manager)
Tel: 86-755-27886063
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Contact Method
6 floor,C building,Jia An Industrial Zone,72# district of Bao An, Shenzhen, Guangdong, China (Mainland) / 518000
Fax: 86-755-27886083
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