Home / Shop / All products / StarTech.com 2m 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 2m 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

1 / 5

Serial cable

StarTech.com 2m 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 2m 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-21311328
Availability: InStock

View reviews

Add an RS232 Serial Port to a Laptop or Desktop via an Available USB-A Port Extend the serial RS-232 communication of USB-A enabled Data Terminal Equipment (DTE - e.g., desktop or laptop) with this 2-meter USB-to-Serial adapter cable....

CHF 67.76 incl. VAT

Delivery time: 3–5 working days

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 an Available USB-A Port

Extend the serial RS-232 communication of USB-A enabled Data Terminal Equipment (DTE - e.g., desktop or laptop) with this 2-meter USB-to-Serial adapter cable.

Serial Port Expansion

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

LED Indicators

The data transmission and reception LED indicators on the adapter enable real-time monitoring of port activity. The USB LED indicates when the adapter has successfully registered with the desktop or laptop. All LEDs assist with diagnosis and troubleshooting.

Seamless Connectivity

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

Built for the Future

The rugged TPE construction and Level 4 ESD protection (15kV Air and 8kV 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.

What Buyers Are Saying

Ratings and reviews for this product, collected with Loox. Have a product question?

About this product

StarTech.com 2m 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

Questions & answers

Will this product fit your setup? Ask the community or read the existing answers.

Ask a question Review this product with Loox

Sign in with your shop account to post. Reading needs no account.

Discussions are currently unavailable. Try again or open the forum.

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?

You receive a 3-year warranty on all products purchased from us, starting from the date of delivery. For repair work carried out by us and newly installed spare parts, we provide a 2-year warranty. Report any warranty claims to info@pixelgipfel.ch before returning the item 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.