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USB to Serial Convertor
  • Connect RS232C serial devices such as barcode scanner, magnetic card reader with serial interface via this converter.
  • - REX-USB60MB is a USB to serial converter.
    - Up to 230.4Kbps data transfer rate.
    - Micro USB (B type Male) connector.
    - Power/Transmit/Receive LED indicators.
    - The terminal application "USB60Term" published at Google Play.
    - Bus powered. no need external power supply

System Requiremnets

Host machine

- Android tablet and smart phone with free Micto USB B type port.
It must be USB Host mode are supported.

Operating System

- Android OS 3.2, Android OS 4.0 and higher


Hardware specifications

Product Name USB60MB
Serial Input/Output level RS-232C level
USB Specification USB(Universal Serial Bus) Specification Rev. 1.1
Connector USB Micro-USB B male
RS-232C D-Sub9 male (with anchor [#4-40])
Number of I/O ports 1 port
Unit Dimensions 3.35[L] x 1.1[W] x 0.43[H] in (85[L] x 28[W] x 11[H] mm)
Cable Length Approx. 2.83 ft (85 cm)
Weight 0.194 oz (55 g)
Data transfer mode Asynchronous (Start stop synchronization)
Data transfer Rate (Baud) 300/600/1,200/2,400/4,800/9,600/19,200/38,400
57,600/115,200/230,400 bps
Transmit Distance Within 50ft (15 m)
Power Voltage DC+5V (Powered for USB Bus)
Power Consumption Average: 36mA(5V) Max.: 60mA(5V)
Serial Parameter Data bit: 7/8 Start bit:1 Stop bit: 1/2
Parity bit: even/odd/none
RS-232C connector D-SUB 9PIN RS-232C connector Male
LED Indicators PWR:Power LED
If the power from USB bus is properly supplied 5V,
this indicator LED will be on.
TXD:Transmit data indicator (Host to Device)
RXD:Receive data indicator (Device to Host)
Operating Environment Temperature
0 to 50 degrees Celsius
Humidity 10 to 90% (non condensing)
Storage Environment Temperature -20 to 65 degrees Celsius
Humidity 10 to 90% (non condensing)


1. Do not remove while the application is communicating. System will be unstable.
2. Do not operate to suspend. System will be unable to resume properly.
3. This product does not support the serial mouse for connecting to RS-232C port.

Product Overview

USB61 Connect image

The pin assignment of the connector.

Signal name Direction DTE - DCE Meaning
1 DCD « Data Carrier Detected
2 RCD « Received Data
3 TXD » Transmitted Data
4 DTR « Data Terminal Ready
5 GND - Signal Ground
6 DSR « Data Set Ready
7 RTS » Request to Send
8 CTS « Clear to Send
9 RI « Ring Indicator
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