Home / Shop / All products / StarTech.com 1m USB to Serial Adapter Cable, USB-A to DB9 RS232, FTDI, COM Retention, LED, Replaceable DB9 Screws and Nuts, ESD Protection, Windows, macOS, and Linux

StarTech.com 1m USB to Serial Adapter Cable, USB-A to DB9 RS232, FTDI, COM Retention, LED, Replaceable DB9 Screws and Nuts, ESD Protection, Windows, macOS, and Linux

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Serial cable

StarTech.com 1m USB to Serial Adapter Cable, USB-A to DB9 RS232, FTDI, COM Retention, LED, Replaceable DB9 Screws and Nuts, ESD Protection, Windows, macOS, and Linux

Name: StarTech.com 1m USB to Serial Adapter Cable, USB-A to DB9 RS232, FTDI, COM Retention, LED, Replaceable DB9 Screws and Nuts, ESD Protection, Windows, macOS, and Linux
Brand: StarTech.com
SKU: KT-21311322
Price: 46.06 CHF
Availability: InStock

CHF 46.06 incl. VAT

Delivery time: 3–7 working days

Add an RS232 serial port to a laptop or desktop via a free USB-A port Extend your USB-A enabled data terminal equipment (e.g., desktop or laptop) with RS-232 serial communication using this 1m USB-to-serial adapter cable. Serial Expansion...

Fast delivery from a Swiss warehouse
3-year warranty
Personal support

Invoice (CH)

Product information

Add an RS232 serial port to a laptop or desktop via a free USB-A port

Extend your USB-A enabled data terminal equipment (e.g., desktop or laptop) with RS-232 serial communication using this 1m USB-to-serial adapter cable.

Serial Expansion

The USB-to-serial adapter adds an RS-232 DB/DE-9 (male) serial port to a desktop or laptop computer via a USB Type-A port. Attach the adapter to a serial device using the pre-installed and removable slotted D-Sub thumbscrews, or install the included DB-9 nuts to ensure compatibility with other serial devices or cables.

LED Indicators

The data transmit and data receive LED indicators on the adapter allow for real-time monitoring of connection activity. The USB LED indicates whether the adapter has successfully connected to the desktop or laptop computer. All LEDs help with diagnosis and troubleshooting.

Seamless Connectivity

The adapter is compatible with Windows, macOS, ChromeOS, and Linux. Drivers for Windows 7 and newer, as well as macOS 10.15 and newer, and Linux, are installed automatically. The USB to RS-232 adapter features a COM retention function, which automatically reassigns the COM port value when the cable is unplugged and re-plugged, or when the system is restarted.

Built for Durability

The robust TPE construction and Level 4 ESD protection (15 kV air and 8 kV contact) enhance the reliability and longevity of the USB-to-serial adapter. Copper shielding minimizes electromagnetic and radio frequency interference (EMI and RFI). Gold-plated connectors improve signal conductivity.

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About this product

StarTech.com 1m USB to Serial Adapter Cable, USB-A to DB9 RS232, FTDI, COM Retention, LED, Replaceable DB9 Screws and Nuts, ESD Protection, Windows, macOS, and Linux

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Frequently Asked Questions

What are the shipping costs and how long does delivery take?

Standard shipping CHF 8.90 (B-Post, 3–5 business days) or Express CHF 23.50 (Swiss-Express "Mond", 1–2 business days) – Delivery by Swiss Post, within Switzerland only. In-stock products are usually processed within one business day; out-of-stock components are procured within 2–3 business days. Pick-up in Winterthur is free of charge.

Can I also pick up my order?

Yes – free of charge at Sulzerallee 80, 8404 Winterthur, during our opening hours. Please wait for our pick-up confirmation before coming by.

How long is my warranty?

All products bought from us come with a 3-year warranty from the date you receive them. Our repairs and the parts we supply for them are also covered for 3 years. Before returning an item, report the warranty claim to info@pixelgipfel.ch and wait for RMA confirmation.

Can I return a product?

Yes – as a private customer with a delivery address in Switzerland, you have a voluntary right of return for 14 days from receipt: 100% for unopened items, 90% for opened but unused items, and under 85% refund for used items. Excluded are custom builds, personalized products, activated software and license keys, as well as opened products that come into contact with the body (e.g., headphones, headsets, VR glasses). Please register your return in advance at info@pixelgipfel.ch – the refund will be processed within 10 business days after inspection.

What payment methods do you accept?

TWINT, common credit and debit cards, and purchase on account with partial payment option via our partner Heylight. All prices include 8.1% VAT; shipping costs will be displayed in the checkout before the order is completed.

How long does it take to assemble my custom PC?

Once all components are available, assembly, configuration, and functional testing usually take 1–2 business days. If parts are not in stock, an additional 2–3 business days for procurement will apply; for pre-orders or special procurements, it can take up to 30 days – we will inform you of any delays.

Can I cancel my order?

You can usually cancel standard products that have not yet been shipped free of charge – please contact us at info@pixelgipfel.ch. For custom builds and specially ordered products, cancellations depend on the processing status; compensation of up to 20% may be charged for work already carried out and components already ordered.