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STARTECH
Item#:
9SIA6ZPKSB9130
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StarTech.com ICUSB2321FIS USB to Serial Adapter - Optical Isolation - USB Powered - FTDI USB to Serial Adapter - USB to RS232 Adapter Cable
(20)
Write a Review
Style:
Optical Isolation
DB9 or DB25
Optical Isolation
921.6 Kbps Baud Rate
Null Modem
Transparent Blue Connectors
Add an RS232 serial port with circuit isolation to your laptop or desktop computer through USB
1 Port FTDI USB to Serial RS232 Adapter Cable with Isolation
USB to RS232 Serial Adapter Cable
USB to Serial Cable
USB to Serial RS232 Cable
USB to DB9
USB to Serial Adapter with Optical Isolation
FTDI Adapter
FTDI USB UART Serial Adapter
Circuit isolation provides protection for sensitive and expensive industrial equipment
Portable USB-Powered design requires no bulky power adapter
+
+
Overview
Specs
Reviews
(20)
Add an RS232 serial port with circuit isolation to your laptop or desktop comput
Learn more about the STARTECH ICUSB2321FIS
Model
Brand
StarTech.com
Model
ICUSB2321FIS
Type
Consumer Electronics
Type
Others
Color
Black
Details
Length
8 ft.
Connector Number
2
Connector Detail
Connector Type(s): 1 - DB-9 (9 pin) Male
Connector Type(s): 1 - USB A (4 pin) Male
Terminal Gender
Male to Male
Specifications
Enclosure Type: Plastic
Isolation: 2500 Vrms
Microsoft WHQL Certified: Yes
Serial Protocol: RS-232
Surge Protection: 500W Bi-directional circuits
Max Baud Rate: 921.6 Kbps
Data Bits: 7, 8
Stop Bits: 1, 2
Parity: None, Odd, Even, Mark, Space
Power Adapter Included: USB Powered
Chipset ID: FTDI - FT232RL
OS Compatibility:
Windows 7 (32/64bit)/ Vista(32/64)/ XP(32/64)/ 2000/ CE(4.2+)
Windows Server 2008 R2/ 2003(32/64)
Mac OS 9.x, 10.x
Linux
Features
Features
USB to Straight-Through RS232 Serial Adapter
Integrated 2500Vrms Optical Isolation Circuits
500W Bi-Directional Surge Protection Circuits
Integrated FTDI USB UART Chip
COM Port assignments maintained across reboot
Compatible with Windows, Mac OS and Linux
Baud Rate up to 921.6 Kbps
Powered by the USB port - no external power adapter required
Designed to make serial port expansion quick and easy.
Additional Information
First Listed on Newegg
February 04, 2026
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STARTECH ICUSB2321FIS
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
Return for refund within: 30 days
Return for replacement within: non-replaceable
This item is covered by
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