# Serial Cable Trendnet TU-S9 Blue USB Type-A DB-9

**URL:** https://aio.lv/en/product--trendnet-tu-s9--430936
**Data updated:** 2025-12-28 21:18 (EET)
**Category:** Serial & Parallel Cables
**Manufacturer:** TRENDNET
**Manufacturer code:** TU-S9
**EAN:** 0710931303209
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 12.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--trendnet-tu-s9--430936

## 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 Trendnet TU-S9 is a reliable serial cable featuring a blue USB Type-A connector and a DB-9 connector. It provides a seamless connection for devices requiring serial communication. This cable is ideal for connecting older hardware to modern computers, ensuring compatibility and ease of use. Its durable design guarantees long-lasting performance, making it a great choice for both personal and professional use.

## Long description

The Trendnet TU-S9 Serial Cable is a USB-to-serial adapter with a blue USB Type-A connector on one end and a DB-9 (RS-232) connector on the other. It enables connection of RS-232 serial devices such as modems, industrial controllers, or legacy peripherals to a computer USB port, providing compatibility between older hardware and modern desktops or laptops.
Advantages
The TU-S9 offers plug-and-play connectivity for many operating systems and a compact, durable cable design that reduces signal loss and wear. Its standard USB Type-A to DB-9 configuration simplifies wiring to legacy serial equipment without requiring internal card installation.
Suitable for
Connecting modems and serial printers to a USB port
Linking industrial controllers, PLCs, and diagnostic equipment
Accessing console ports on network devices and legacy hardware
Key specifications
Model: TRENDnet TU-S9
Connectors: USB Type-A (male) to DB-9 RS-232 (female)
Brand: TRENDnet
MPN: TU-S9
EAN: 0710931303209
Category: Serial & Parallel cables
How to use
Plug the USB Type-A connector into an available USB port on your computer and attach the DB-9 connector to the serial device. If required by your operating system, install the appropriate driver provided by TRENDnet or included with the device. After installation, configure the serial port settings (baud rate, parity, data bits, stop bits, and flow control) in your application or terminal program to match the serial device.
Usage recommendations
For reliable communication, use short cable runs when possible and verify matching serial settings between the computer and the RS-232 device. If you experience connection issues, check for the latest driver from TRENDnet and confirm that the USB port supplies sufficient power.

## Specifications

| Feature | Value |
|---|---|
| Certification | CE, FCC |
| Product colour | Blue |
| Connector 1 | USB Type-A |
| Connector 2 | DB-9 |
| Connector 1 gender | Male |
| Connector 2 gender | Male |
| Harmonized System (HS) code | 84733080 |

## FAQ

### How much does the Serial Cable Trendnet TU-S9 cost, and is it available for purchase?

The price is 14.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 80 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 TRENDNET 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 TRENDNET 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

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