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StarTech ICUSB2321FIS 1-Port Isolated FTDI USB-to-RS232 Adapter Cable
1-Port Isolated FTDI USB-to-RS232 Adapter Cable for connecting compatible legacy and industrial RS232 equipment to a modern USB-equipped computer.
Frequently asked questions
What is StarTech ICUSB2321FIS?
It is a isolated adapter cable that adds one isolated RS232 port with 2500Vrms optical isolation and bidirectional surge protection.
How many RS232 ports are provided?
It provides 1 RS232 serial port.
Which connectors are fitted?
The host side uses USB Type-A male; the serial side provides 1 × DB9 male RS232.
What is the maximum baud rate?
The specified maximum baud rate is 921.6Kbps.
Which chipset is used?
It uses the FTDI FT232RL chipset.
Does it need an external power adapter?
No. It is powered through USB.
What protection is built in?
The adapter specifies 2500Vrms optical isolation and 500W bidirectional surge-protection circuits.
What warranty applies?
ICUSB2321FIS carries a StarTech.com 2-year manufacturer warranty, subject to the manufacturers terms and eligibility requirements.
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(ICUSB2321FIS)
Why choose ICUSB2321FIS?

ICUSB2321FIS specifications
Exact-model specifications for compatibility checking. Measurements may be rounded.
| Warranty Information | |
|---|---|
| Warranty | 2 Years |
| Hardware | |
| Product Type | isolated adapter cable |
| Ports | 1 |
| Bus / Host Interface | USB Type-A male |
| Serial Protocol | RS-232 |
| Chipset | FTDI FT232RL |
| Enclosure | Plastic |
| Performance | |
| Maximum Baud Rate | 921.6Kbps |
| Serial Ports | 1 × DB9 male RS232 |
| Power | |
| Power Source | USB powered |
| Physical Characteristics | |
| Length | 2.5m (8.3ft) |
| Dimensions / Weight | Cable 2.5m; adapter width 40mm; 107g |
| Colour | Black unless otherwise specified |
| Special Feature | |
| Details | Integrated 2500Vrms optical isolation and 500W bidirectional surge-protection circuits help protect sensitive serial equipment. |
| What's in the Box | |
| Included | 1-Port Isolated FTDI USB-to-RS232 Adapter Cable and model-specific supplied accessories |
Sources: https://www.devicedeal.com.au/startech-usb-to-serial-adapter-cable-with-isolatio and https://www.startech.com/
| SKU | ICUSB2321FIS |
| Barcode # | 65030845373 |
| Brand | STARTECH |
| Shipping Weight | 0.2400kg |
| Shipping Width | 0.100m |
| Shipping Height | 0.050m |
| Shipping Length | 0.200m |
| Shipping Cubic | 0.001000000m3 |
This Australian-version product is supplied by DeviceDeal and is covered by the 2-year manufacturer warranty term listed for this exact product.
- Keep your DeviceDeal tax invoice as proof of purchase.
- Coverage is subject to StarTech.com warranty terms, eligibility and product assessment.
- Warranty service does not replace rights that may apply under Australian Consumer Law.
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