• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Brand Name: HighTek
  • Model Number: HU-107
  • Place of Origin: Guangdong, China (Mainland)
  • Use: Computer
  • USB Type: Standard
  • USB Signal: VCC, DATA+, DATA-, GND, FG
  • RS-485 Signal: T/R+, T/R-, GND
  • RS-422Signal: TXD+, TXD-, RXD+, RXD-, GND
  • Working mode: asynchronous working
  • Transmission rate: 300-921600bps, Automatically detect the serial port signal rate
  • Load capability: Support point-to-multipoint transmission
  • Transmission distance: RS-485/422 port 1.2km (921600bps-300bps)
  • Interface protection: 600W lightning strike and surge protection, ±15KV ESD protection
  • Interface form: USB port 5pin male interface, RS-485/422 port DB9 male
  • Signal Indication: 3 Pilot Lamps for Power(PWR), Send(TXD) and Receive (RXD)

Packaging & Delivery

Packaging Details: 53*27*8cm
Delivery Detail: Shipped in 2 days after payment



Product Description


Performance parameters

USBV1.1/2.0 Standard, RS-485/RS-422 TIA/EIA Standard 
RS-485 Signal: T/R+, T/R-, GND 
RS-422Signal: TXD+, TXD-, RXD+, RXD-, GND 
Working mode: asynchronous working, point-to-point or point-to-multipoint 2 wires (half duplex) 4 wires (full duplex) 
Transmission rate:300-921600bps, Automatically detect the serial port signal rate 
Load capability: 

Support point-to-multipoint transmission. Each converter 

can connect 32 RS-422 or RS-485 interface equipment

Transmission distance: RS-485/422 port 1.2km (921600bps-300bps), USB port no more than 5 meters
Interface protection: 600W lightning strike and surge protection, ±15KV ESD protection 
Interface form:USB port 5pin male interface, RS-485/422 port DB9 male 
Signal Indication: 3 Pilot Lamps for Power(PWR), Send(TXD) and Receive (RXD) 
Transmission media: twisted-pair cable or shielded cable
Dimensions: 62mmx33mmx19mm 
Working environment: -40℃ to 85℃, relative humidity 5% to 95%
Windows95/98/2000/XP/7/8/Vista/IMAG supported



Connector and signal

RS-485/RS-422 data output & terminal pin assignment

DB9 male Output signalRS-422 full-duplex RS-485 half  
5GNDGround wireGround wire


Communication sketch map

USB to RS-422 conversion

1. RS-422 point-to-point 4 wires full-duplex

2. RS-422 point-to-multipoint 4 wires full-duplex

USB to RS-485 conversion

1. RS-485 point-to-point 2 wires half-duplex

2. RS-485 point-to-multipoint 2 wires half-duplex


Problem and resolution 

1. Data communication failure 

 A. Make sure USB interface connection is correct. 

 B. Make sure RS-485/RS-422 output interface connection is correct. 

 C. Make sure power supply is OK. 

 D. Make sure the wire terminal connection is OK. 

 E. Make sure the pilot lamp flashes when receiving. 

 F. Make sure the pilot lamp flashes when sending. 


Product appearance


Company Information




Packaging & Shipping






Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
China (Mainland)
Transaction Level:
Supplier Assessments:
3 Transactions 500+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $30,000
Learn More