# USB to Sub-D 9 Pin Serial Adapter Cable Premium InLine 33304D

**URL:** https://aio.lv/en/product--inline-33304d--1092758
**Data updated:** 2026-01-03 12:48 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** InLine
**Manufacturer code:** 33304D
**EAN:** 4043718111091
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 22.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 18.59 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--inline-33304d--1092758

## 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 Sub-D 9 Pin Serial Adapter Cable Premium features a 0.2 m length and a USB Type-A connector. It allows for easy connection of serial devices to your computer, ensuring reliable data transfer. The blue cable design adds a touch of style while maintaining functionality. Ideal for connecting older devices that require a serial interface.

## Long description

The InLine USB to Sub-D 9 Pin Serial Adapter Cable Premium (MPN 33304D) is a 0.2 m cable with a USB Type-A connector that converts a USB port to a DB‑9 (Sub‑D 9) serial interface. It uses the PL-2303 chipset and enables connection of legacy serial devices to modern computers. Drivers are available for download from the manufacturer websites.
Advantages
This premium adapter cable provides a compact 0.2 m length for tidy connections, a standard USB Type-A plug for wide compatibility, and a blue jacket for easy identification. The PL-2303 chipset ensures broad driver support for many operating systems when the appropriate drivers from the vendor are installed.
Suitable for
 Connecting legacy serial devices (RS‑232) to modern PCs
 Programming or configuring network equipment, routers, or switches with serial console ports
 Point-of-sale terminals, industrial controllers, and measurement instruments that use DB‑9 serial ports
Key specifications
 Manufacturer: InLine
 Model / MPN: 33304D
 EAN: 4043718111091
 Length: 0.2 m
 Connector 1: USB Type‑A
 Connector 2: DB‑9 (Sub‑D 9)
 Chipset: PL‑2303
 Colour: Blue
How to use
Install the appropriate PL‑2303 drivers for your operating system by downloading them from www.intos.de or www.inline-info.com. After installing the drivers, plug the USB Type‑A connector into an available USB port on your computer and connect the DB‑9 end to the serial device. The operating system should detect the adapter and assign a COM port; use that COM port in your terminal or communication software.
Usage recommendations
To avoid connection issues, install the vendor-recommended drivers before connecting the cable and secure the DB‑9 connector if the device has thumbscrews or mounting points. Avoid using the adapter in environments with excessive mechanical strain or moisture.

## Specifications

### Features

| Feature | Value |
|---|---|
| Cable length | 0.2 m |
| Product colour | Blue |
| Connector 1 | USB Type-A |
| Connector 2 | DB-9 |
| Connector 1 gender | Male |
| Connector 2 gender | Male |

## FAQ

### How much does the USB to Sub-D 9 Pin Serial Adapter Cable InLine 33304D cost, and is it available for purchase?

The price is 22.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 74 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 Sub-D 9 Pin Serial Adapter Cable InLine 33304D?

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/1092758/57923709_large.webp