6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention
StarTech ID: ICUSB422
The ICUSB422 6 ft Professional RS422/485 USB Serial Cable Adapter with COM Port Retention lets you
connect RS422 or RS485 serial devices to your USB-enabled computer. The adapter features a 9-pin (DB9)
male serial connector as well as dipswitch controls for easy port configuration, and requires minimal software.
The RS422/RS485 USB Adapter is fully powered via the host USB connection and provides power to the
attached serial device without requiring an external power adapter. COM Port Retention saves the assigned port
settings, allowing you to disconnect and re-connect the adapter with little to no configuration required on the
host computer.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
Applications
Ideal for connecting serial RS422/485 devices to notebooks or tablet PC’s through an available USB port
Perfect for controlling/diagnosing manufacturing machines(CNC, Process Control Equipment, Bar Code
Scanners, Serial Printers)
Security device control (key panels, cameras, card readers)
Great for Industrial programmers looking to test new code with serial devices
Adapting and expanding POS systems
Communicating with test and monitoring equipment.
Connect and program LED and Digital signage boards with serial communication ports
www.startech.com
1 800 265 1844
Features
USB to Straight-Through RS422/485 Serial Adapter
Supported baud rates from 300bps to 921.6 Kbps
Being able to rename devices no matter how many are plugged in
Supports COM Port retention
Configurable port for RS422 or RS485 support
Supports RS-485 Auto Transceiver Turn Around by Unique Featured ATTA Hardware
Backwards compatible with USB 1.1
Integrated adapter and cable eliminates the need for additional cables
Two interface modes; 4 wire RS422(TxD+/-, RxD+/-), and 2 wire RS485 (DATA+, DATA-)
120 OHM terminator that can be Enabled/Disabled by DIP switch
Transmission Echo for RS485 collision detection
www.startech.com
1 800 265 1844
Technical Specifications
Warranty 2 Years
Cable Length 6 ft [1.8 m]
Color Black
Enclosure Type Plastic
Product Height 0.9 in [22.1 mm]
Product Length 1.8 in [45 mm]
Product Weight 3.5 oz [100 g]
Product Width 1.6 in [41.5 mm]
Bus Type USB 2.0
Chipset ID FTDI - FT232RL
Interface Serial
Port Style Cable Adapter
Ports 1
Data Bits 7, 8
FIFO 256 Bytes
Max Baud Rate 921.6 Kbps
Parity Even, Odd, None
Serial Protocol RS-422/485
Stop Bits 1, 2
Connector Type(s) 1 - USB A (4 pin) Male
External Ports 1 - DB-9 (9 pin; D-Sub) Male
Microsoft WHQL
Certified
Yes
OS Compatibility Windows® 10 (32/64), 8 / 8.1 (32/64), 7 (32/64), Vista (32/64), XP (32/64), 2000, 98SE,
XP Embedded, CE (4.2+)
Windows® Server 2012, 2008 R2, 2003
Mac OS® 10.x (tested up to 10.11)
Linux 2.4.x / 2.6.x
Humidity 5~95% RH
Operating
Temperature
0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Shipping (Package)
Weight
0.5 lb [0.2 kg]
Included in Package 1 - USB to RS422/485 Serial Adapter
www.startech.com
1 800 265 1844
Included in Package 1 - Driver CD
Included in Package 1 - Installation Guide
Certifications, Reports and Compatibility
www.startech.com
1 800 265 1844
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