USB to RS232 Adapter Cable StarTech ICUSB232SM3

Name: USB to RS232 DB9 Serial ICUSB232SM3
Brand: StarTech
SKU: 631729
Price: 41.99 EUR
Availability: InStock

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USB to RS232 DB9 Serial Adapter Cable M/M StarTech ICUSB232SM3

USB to RS232 Adapter Cable StarTech ICUSB232SM3 Photo 1

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USB to RS232 Adapter Cable StarTech ICUSB232SM3 Photo 3

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Offer for legal entity, cashless payment. Why is an item available only for a legal entity?
This is due to long delivery times and limited product warranties.

Short description

The StarTech.com 3ft USB to RS232 DB9 Serial Adapter Cable (M/M) connects your USB devices to RS232 serial devices. It features a DB-9 connector on one end and a USB 2.0 A connector on the other, with a cable length of 0.9 meters. The blue and transparent design ensures durability and flexibility, making it ideal for various applications. Perfect for connecting legacy devices to modern computers.

Available at price 41.99 €: 4 pcs.

Total available for order: 148 pcs.

Warranty: 1 Year

SKU: 631729

Manufacturer: StarTech

Learn more

Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

29.06.2026 {{selectedOffer.officeDeliveryString}}

free

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

29.06.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

02.07.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 € (Weight: 0.07 kg)

Parcel couriers

Latvijas Pasts pakomāts / Unisend / DPD Paku skapis / Omniva / Venipak Pickup / Venipak Locker / Latvijas Pasts nodaļa

02.07.2026 {{selectedOffer.parcelStationDeliveryString}}

From 1.99 €

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Payment Methods:

Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay

Available for private customers at price 43.49 €: 30 pcs.

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Product information

Description

The StarTech ICUSB232SM3 3 ft (0.9 m) USB to RS232 DB9 serial adapter cable connects computers with an available USB port to DB9 RS232 serial devices. It provides a DB-9 male connector on one end and a USB 2.0 A male connector on the other, enabling communication with legacy serial peripherals from modern Mac or PC systems. The cable uses a converter chip located at the USB end, which allows longer serial extension lengths than converters placed at the DB9 end.

Advantages

The converter chip placed at the USB end overcomes the 15 ft USB limitation, enabling the use of longer DB9 serial extension cables when required. The 0.9 m cable offers durability and flexibility with a blue transparent jacket, and the cable is simple to install with plug-and-play compatibility on most systems. The adapter provides a cost-effective way to bridge modern computers and older RS232 devices, and it is backed by StarTech.com lifetime warranty and free lifetime technical support.

Suitable for

Connecting legacy RS232 serial devices (DB9) to laptops or desktops via USB
Point-of-sale equipment, industrial control devices, and instrumentation with DB9 serial ports
Extending serial connections using a DB9 extension cable beyond typical USB length limits

Key specifications

Manufacturer: StarTech
Model: ICUSB232SM3
MPN: ICUSB232SM3
EAN: 0065030842440
Cable type: USB 2.0 A (male) to RS232 DB9 (male)
Cable length: 3 ft / 0.9 m
Converter location: USB end (integrated converter chip)

How to use

Connect the USB A male end to an available USB port on your Mac or PC. Plug the DB9 male connector into the serial device's DB9 female port. Install any required drivers if prompted by the operating system; many systems will detect the adapter automatically. If longer reach is needed, attach a compatible DB9 extension cable to the DB9 connector—long extensions are possible because the converter is at the USB end.

Usage recommendations

Use a properly shielded DB9 extension cable and avoid routing the serial cable near high-voltage or high-frequency sources to maintain signal integrity. Confirm driver availability for your operating system before deployment and consider testing communication settings (baud rate, parity, data bits, stop bits) to match the connected serial device.

All features

Weight:: 0.056 kg
Certification:: CE, FCC
Chipset:: Prolific - PL2303HXD
Storage temperature (T-T):: -20 - 80
Package weight:: 70 g
Operating temperature (T-T):: 0 - 60
Cable length:: 0.9 m
Relative humidity:: 0 - 65
Height:: 15 mm
Width:: 35 mm
Depth:: 914 mm
Product colour:: Transparent, Blue
Compatible operating systems:: Windows 98SE/ ME/ 2000/ XP(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2, MAC X, Linux
Package depth:: 220 mm
Package height:: 15 mm
Package width:: 200 mm
Master (outer) case height:: 290 mm
Master (outer) case width:: 360 mm
Housing material:: Plastic
Connector 1:: DB-9
Connector 2:: USB 2.0 A
Baud rate:: 921.6 Kbit/s
FIFO (First In, First Out):: 192
Connector 1 gender:: Male
Connector 2 gender:: Male
Quantity per pack:: 1 pc(s)
Master (outer) case length:: 570 mm
Products per master (outer) case:: 100 pc(s)
Sustainability certificates:: RoHS

Instructions

mmo_9116791_1573130907_2247_12485.pdf

startech-ICUSB232SM3-631729.pdf

Description

Instructions

mmo_9116791_1573130907_2247_12485.pdf

startech-ICUSB232SM3-631729.pdf

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Warehouse	Stock	Delivery to the store	Store Price
WH355	30	26.06.2026	43.49 €
WH94	28	19.06.2026 Best delivery	47.49 €
WH357	30	29.06.2026	57.99 €

Available only for legal entities
Warehouse	Stock	Delivery to the store	Store Price
BT11	4	29.06.2026	41.99 €
EU9	28	19.06.2026 Best delivery	44.49 €
WH109	28	07.07.2026	46.99 €

43.49 €

Stock: 30

Delivery Date: 26.06.2026

Warehouse: WH355

47.49 €

Stock: 28

Delivery Date: 19.06.2026 Best delivery

Warehouse: WH94

57.99 €

Stock: 30

Delivery Date: 29.06.2026

Warehouse: WH357

Available only for legal entities

41.99 €

Stock: 4

Delivery Date: 29.06.2026

Warehouse: BT11

44.49 €

Stock: 28

Delivery Date: 19.06.2026 Best delivery

Warehouse: EU9

46.99 €

Stock: 28

Delivery Date: 07.07.2026

Warehouse: WH109

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Customer questions

FAQ

How much does the USB to RS232 Adapter Cable StarTech ICUSB232SM3 cost, and is it available for purchase?

The price is 41.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 148 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All StarTech products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized StarTech service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

Where can I download the instructions for USB to RS232 Adapter Cable StarTech ICUSB232SM3?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

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