8 Port Serial Hub USB to RS232/RS485/RS422 Adapter - Industrial USB 2.0 to DB9 Serial Converter Hub - IP30 Rated - Din Rail Mountable Metal Serial Hub - 15kV ESD Protection

Add eight ports supporting three serial protocols, to easily connect serial devices to your computer through USB, with 15kV ESD protection

Product ID: ICUSB234858I

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  • RUGGED & RELIABLE: This industrial metal USB to serial adapter hub adds 8 RS-232/422/485 ports & 1 USB 2.0 port w/ 15kV ESD surge protection (level 4), IP30 rating & locking connectors on all ports
  • 8 SERIAL PORTS: The ports on this USB to serial converter can be individually configured to RS232, RS422 or RS485 (2wire/4wire) at baud rates up to 921.6Kbps for devices like barcode scanners/printers
  • MOUNTING OPTIONS: This metal mountable 8-port serial hub w/ 6ft (1.8 m) screw-lock USB cable incl. installs securely to a desk, wall or DIN rail using the built-in mounting ears & incl. DIN brackets
Your price
¥61,889 JPY excl.
¥68,078 JPY incl.

Add extra COM ports to your laptop or desktop computer, quickly and easily. This USB to RS232/422/485 serial adapter lets you connect to your serial devices through an external USB port.

Supports multiple serial protocols

The versatile serial adapter converts a single USB port into eight RS232/RS422/RS485 serial ports, enabling you to connect, monitor, and control a wide range of serial devices, such as sensors, barcode scanners, and LED signage. It supports four operating modes, including RS232, RS422, 4-wire and 2-wire RS485.

Ideal for harsh environments

With its rugged IP30-rated metal hub housing, the serial adapter is built to meet the extreme demands of harsh and mission-critical environments. It provides 15 kV ESD protection, which helps to reduce downtime in industrial environments where communications lines are more prone to noise emissions or sudden spikes in voltage.

The serial adapter offers flexible mounting options, with a built-in wall-mounting bracket and included DIN rail mounting kit. It also features a screw-locking host connection plus a screw-locking USB-B connector on the included USB cable, to prevent accidental disconnections.

Fast data transfers

The serial adapter is equipped with high-speed UARTs, providing fast data rates of up to 921Kbps in RS232/422/485 operating modes.

The ICUSB234858I is backed by a StarTech.com 2-year warranty and free lifetime technical support.


  • Connect your RS232, RS422 and RS485 serial devices through your computer's USB port for easy access to barcode scanners, receipt printers and other serial devices
  • Connect, monitor and control industrial/automotive sensors and equipment
  • Program LED and digital signage boards with serial communication ports
  • Connect a satellite receiver, serial modem, or PDA with serial sync

Partner Numbers

  • SB C&S S6A1009980
  • SYNNEX Japan ZU201PG
  • UPC 065030878579


  • Windows 8 logo
  • Windows 7 logo
  • Windows Server 2012 logo
  • Linux logo
  • Windows 10 logo
  • Windows 11 logo
  • macOS Sierra (10.12) logo
  • Windows Server 2016 logo
  • macOS High Sierra (10.13) logo
  • macOS Mojave (10.14) logo
  • Windows Server 2019 logo
  • macOS Catalina (10.15) logo
  • macOS Big Sur (11.0) logo
  • macOS Monterey (12.0) logo
Windows® 7, 8, 8.1, 10, 11
Windows Server® 2008 R2, 2012, 2012 R2, 2016, 2019
macOS 10.9 to 10.15, 11.0, 12.0
Linux 2.4.x to 4.11.x LTS Versions only


Warranty Information Warranty 2 Years
Connector(s) 1 - External Ports USB Type-B (4 pin) USB 2.0
USB Type-A (4 pin) USB 2.0
8 - External Ports DB-9 (9 pin, D-Sub)
Environmental Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Humidity 5~95% RH
Hardware Ports 8
Interface Serial
Bus Type USB 2.0
Port Style External Hub
Chipset ID FTDI - FT4232H
Genesys Logic - GL825
Indicators 8 - LED Indicators Sets of 4 - port mode
Port send
Port receive
1 - LED Indicators Power
Packaging Information Shipping (Package) Weight 1.6 kg [3.4 lb]
Package Length 29 cm [11.4 in]
Package Width 19 cm [7.5 in]
Package Height 67 mm [2.6 in]
Performance Maximum Data Transfer Rate 921.6 Kbps
Serial Protocol RS-232/422/485
Max Baud Rate 921.6 Kbps
Data Bits 7, 8
Buffer Size 2 KB
Parity Odd, Even, Mark, Space, None
Stop Bits 1, 2
Surge Protection 15 kV ESD Surge Protection
Physical Characteristics Color Black
Material Steel
Product Length 21.9 cm [8.6 in]
Product Width 12.8 cm [5.0 in]
Product Height 2.5 cm [1.0 in]
Weight of Product 688 g [24.3 oz]
Power Power Source AC Adapter Included
Input Voltage 100 - 240 AC
Input Current 1 A
Output Voltage 12V DC
Output Current 3.0 A
Plug Type M
Power Consumption (In Watts) 36 W
Software OS Compatibility Windows® 7, 8, 8.1, 10, 11
Windows Server® 2008 R2, 2012, 2012 R2, 2016, 2019
macOS 10.9 to 10.15, 11.0, 12.0
Linux 2.4.x to 4.11.x LTS Versions only
What's in the Box 1 - Included in Package USB serial hub
6 ft. [2 m] USB-B with screw lock to USB-A cable
DIN rail kit
universal power adapter (NA/JP, UK, EU, ANZ)
instruction manual


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Frequently Asked Questions


Older applications that use serial communication often use legacy hardware addresses that do not work with PCI, PCIe, or USB to Serial products. We recommend contacting the software provider/support team to check if this is the case.

Common Issues

Use a USB to Serial product that features COM Port Retention.  These products will store settings that are unique to the connected device in non-volatile memory, allowing you to retain the desired settings regardless of the USB Port to which the adapter is connected.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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