# USB to RS232 Adapter InLine 33304A 0.8m

**URL:** https://aio.lv/en/product--inline-33304a--1092757
**Data updated:** 2026-01-03 12:48 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** InLine
**Manufacturer code:** 33304A
**EAN:** 4043718053391
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.49 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 16.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--inline-33304a--1092757

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

The InLine USB to RS232 Adapter allows you to connect RS232 devices to your computer via USB. It features a 9-pin Sub-D male connector and a 0.8m cable length, providing flexibility and ease of use. The adapter is compatible with various operating systems and is ideal for connecting serial devices such as printers, modems, and industrial equipment. Its compact design and blue color make it a practical choice for any workspace.

## Long description

The InLine USB to RS232 Adapter (33304A) converts a USB port into an RS-232 serial interface, enabling connection of RS-232 devices to a computer via USB. The adapter has a 9-pin Sub-D male (DB9) connector and a 0.8 m cable, and is supplied with a driver and manual. It is compatible with common operating systems and is suitable for connecting devices such as modems, printers, PDAs and industrial equipment without occupying a computer's built-in serial port.
Advantages
This USB to RS232 adapter provides a compact and portable solution for adding a serial port via USB. The 9-pin Sub-D male (DB9) connector ensures compatibility with standard RS-232 peripherals. The 0.8 m cable length balances reach and desk neatness. The product includes drivers and a manual for easy installation and comes in a blue housing for easy identification.
Suitable for
Connecting modems to a computer via USB
Connecting printers and POS devices that use RS-232
Linking industrial equipment and control systems with RS-232 interface
Connecting legacy PDAs and serial peripherals
Key specifications
Manufacturer: InLine
Model / MPN: 33304A
EAN: 4043718053391
Connector 1: 9-pin Sub-D male (DB9)
Cable length: 0.8 m
Colour: Blue
Includes: driver and manual
How to use
Install the supplied driver on the computer following the manual. Connect the USB end of the adapter to an available USB port and attach the RS-232 device to the DB9 connector. After driver installation the adapter will create a virtual COM port in the operating system; configure your application or device to use that COM port and the required serial parameters (baud rate, parity, data bits, stop bits).
Usage recommendations
For stable communication, use the shortest practical cable routing and verify serial settings match the connected device. If connection problems occur, confirm correct driver installation and try a different USB port or restart the computer.

## Specifications

### Features

| Feature | Value |
|---|---|
| Product colour | Blue |
| Connector 1 | 9pin Sub D male |
| Connector 2 | DB9 |
| Connector 1 gender | Male |
| Connector 2 gender | Male |

### Performance

| Feature | Value |
|---|---|
| Compatible operating systems | Win98/ME/2000/XP/Vista
Mac OS |

## FAQ

### How much does the USB to RS232 Adapter InLine 33304A cost, and is it available for purchase?

The price is 19.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 544 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: 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 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: connector 1, connector 2, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for USB to RS232 Adapter InLine 33304A?

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.

## Image

https://aio.lv/img/cache/product/1092757/64142377_large.webp