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1 Port USB To Serial Converter Easy Installation 1800m Transmission Distance

Minimum Order Quantity : 1 Price : Negotiable
Packaging Details : Carton Delivery Time : 7 Working Days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 3000 sets per month
Place of Origin: Shenzhen, China Brand Name: 3onedata
Certification: CE, FCC, RoHS Model Number: USB485

Detail Information

USB Ports: 1 Serial Ports: 1
Input Power: Port-powered Cable Length: 1.5m
Operating Temperature: -20~60℃ Warranty: 3 Years
High Light:

usb to rs422 converter


usb 2 serial converter

Product Description

1-port USB to RS-485 Converter


USB485 series are passive pocket USB to RS-485/422 interface converter, which can achieve bilateral switching of data between USB interface and RS-485/422 serial port without external power supply. This series include 2 optional products and provide 1 USB interface, 1 RS-485 or 1 RS-485/422 serial port. Interface is equipped with 600W surge protection and 15kV electrostatic protection, which can effectively protect the device from damage.


The product provides matched driver program software; USB interface connected to PC will make up a serial COM port in the computer system. PC host can communicate with RS-485/422 device via virtual COM port.


USB485 series have compact size and are easy for installation. Specific LED indicator is convenient for judging signal conversion. It can be widely used in industrial control automation system, bar-code scanner, PLC and PLD, PDA (WinCE system), label printer, POS system, data acquisition control system, security access control system, etc.



Serial Port


Standard: EIA RS-485, RS-422

Quantity of serial port: 1 RS-485 serial port or RS-485/422 serial port

RS-485 signal: D+, D-, GND

RS-422 signal: T+, T-, GND, R+, R-

Baud rate: 300bps~115200bps

Interface form: adopt DB9 Male or 5-pin 5.08mm pitch terminal blocks

Transmission distance: 1800m

Direction control: RS-485 direction adopts ADDC (Automatic Data Direction Control) 

Load capacity: RS-485 supports 32-point polling environment (customizable 128-point)

Interface protection: 600W surge protection, 15kV electrostatic protection



USB Port



Standard: USB 1.1, USB 2.0, USB CDC V1.1

Quantity of interfaces: 1 USB interface

USB signal: VCC, DATA+, DATA-, GND

Transmission rate: high speed 480Mbps, full speed 12Mbps

Interface form: USB A-type plug, Female

Transmission distance: 5m


Operating System


Windows 98/ME/2000/XP/7, Linux v5.0



Power Requirement



USB interface power supply, without external power supply


Power Consumption


Static power consumption: ≤80mA

Dynamic power consumption (mean value): ≤150mA


Environmental Limit


Operating temperature: -20~60℃

Storage temperature: -25~85℃

Relative humidity: 5%~95% (no condensation)





Housing: plastic

Dimension (W x H x D): 33mm×18mm×72mm (cable length 1.5m)

Weight: 70g








3 years



Ordering Information


Available Models USB RS-485 RS-485/422 Power Supply
USB485B 1 -


USB485C  1  1


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