# InLine 33304X USB to Serial Adapter Cable with Ferrite, USB-A to 9-pin Sub-D Male

**URL:** https://aio.lv/en/product--inline-33304x--12424652
**Data updated:** 2026-05-10 03:04 (EEST)
**Category:** Serial & Parallel Cables
**Manufacturer:** InLine
**Manufacturer code:** 33304X
**EAN:** 4043718049585
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.49 €
**Prices and availability valid until:** 2026-07-04 23:59
**Price without VAT (21%):** 21.89 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--inline-33304x--12424652

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The InLine 33304X is a high-quality USB to serial adapter cable designed for connecting serial devices to a USB port. It features a USB-A connector on one end and a 9-pin Sub-D male connector on the other. Equipped with an integrated ferrite core to reduce electromagnetic interference, this cable ensures stable data transmission for industrial, office, or legacy hardware applications.

## Long description

The InLine 33304X USB to Serial Adapter Cable is a reliable solution for connecting legacy serial devices to modern computers via a USB port. Featuring a USB-A connector and a 9-pin Sub-D male interface, this adapter allows for seamless integration of hardware such as modems, ISDN systems, and PDAs without the need for a dedicated serial port on your computer.
Advantages
This adapter cable is equipped with an integrated ferrite core that effectively reduces electromagnetic interference, ensuring stable and consistent data transmission. It supports data transfer rates exceeding 500 KBit/s and operates without requiring an interrupt, which simplifies system configuration. The compact design and simple installation process make it an efficient tool for maintaining connectivity with older peripheral equipment.
Suitable for
Connecting modems to USB ports
Integrating ISDN systems
Linking PDAs and legacy hardware
Industrial and office equipment communication
When it may not be suitable
This adapter is designed for standard serial communication and may not be suitable for high-speed industrial automation tasks that require specific hardware-level timing or non-standard voltage levels. It is also not intended for use with devices that require a physical serial port integrated directly into the motherboard for specific legacy software compatibility.
Key specifications
Connector types: USB-A to 9-pin Sub-D male
Data transmission speed: Over 500 KBit/s
Integrated ferrite core for interference reduction
Chipset: Prolific PL2303GT
Cable length: Approximately 0.2 meters
Compatibility: Windows 98, ME, 2000, XP, Vista, 7, 8, 10 and Mac OS 8.6, 9.0, X
How to use
To use the adapter, connect the USB-A end to an available port on your computer and the 9-pin Sub-D end to your serial device. Since the device does not include pre-installed drivers, you must visit the manufacturer's website to download the appropriate driver for your operating system. Once the driver is installed, the system will recognize the adapter as a virtual COM port, allowing you to configure your serial device through your software settings.
What to consider before purchase
Verify that your operating system is supported
Ensure your serial device uses a 9-pin Sub-D connection
Check if your software requires a specific COM port assignment
Confirm that you have internet access to download the necessary drivers
Usage recommendations
For optimal performance and to minimize signal noise, ensure the cable is not tightly coiled and is kept away from high-voltage power lines. Always download the latest driver version from the official manufacturer website to ensure compatibility with newer operating systems.

## FAQ

### How much does the InLine 33304X USB to Serial Adapter Cable cost, and is it available for purchase?

The price is 26.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 372 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 06.07.2026 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: Bank transfer. 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 InLine 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 InLine 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12424652/68721983_large.webp