# USB to Serial Adapter Cable InLine 33304

**URL:** https://aio.lv/en/product--inline-33304--1082713
**Data updated:** 2026-01-03 12:46 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** InLine
**Manufacturer code:** 33304
**EAN:** 4043718014705
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 19.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--inline-33304--1082713

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The InLine USB to Serial Adapter Cable features a USB Type-A male connector and a DB-9 male connector, measuring approximately 0.2m in length. It is designed for easy connection of serial devices to USB ports, providing a reliable and efficient solution for data transfer. The cable is blue and transparent, ensuring visibility and durability. Ideal for connecting older serial devices to modern computers.

## Long description

The InLine 33304 USB to Serial Adapter Cable converts a USB Type-A port to a DB-9 (RS-232) serial connection. At approximately 0.2 m long, the cable features a USB Type-A male connector on one end and a DB-9 male connector on the other, with a blue transparent jacket that allows visual inspection of the cable. It is intended for connecting legacy serial devices such as mice, modems and other RS-232 equipment to modern computers with USB ports.
Advantages
This adapter provides a compact and convenient way to link DB-9 serial devices to USB ports without requiring internal cards. The short 0.2 m length reduces cable clutter and the visible blue transparent housing helps identify the cable and inspect its condition. The standardized USB Type-A and DB-9 male connectors ensure compatibility with common ports and serial equipment.
Suitable for
Connecting serial mice and pointing devices
Linking external modems to USB-equipped computers
Connecting RS-232 industrial or measurement equipment
Temporary console access to network or embedded devices
Key specifications
Brand: InLine
Model / MPN: 33304
EAN: 4043718014705
Connector 1: USB Type-A (male)
Connector 2: DB-9 (male)
Length: approx. 0.2 m
Colour: Blue, transparent
How to use
Plug the USB Type-A male connector into an available USB port on your computer. Connect the DB-9 male connector to the serial device's female DB-9 port. If required by your operating system, install the appropriate driver so the USB-to-serial interface is recognized. After connection and driver installation, configure the serial communication parameters (baud rate, parity, data bits, stop bits) in your application or device settings.
Usage recommendations
Use this short adapter cable for close-proximity connections to avoid strain on ports; for longer distances, choose a longer shielded serial cable or a USB-to-serial adapter with an integrated longer cable. Ensure drivers are compatible with your OS and verify serial settings match the connected device.

## Specifications

### Features

| Feature | Value |
|---|---|
| Product colour | Blue, Transparent |
| Connector 1 | USB Type-A |
| Connector 2 | DB-9 |
| Connector 1 gender | Male |
| Connector 2 gender | Male |

## FAQ

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

The price is 23.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 222 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 14.07.2026 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, 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 Serial Adapter Cable InLine 33304?

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/1082713/56573464_large.webp