# Interface Card Adapter RS-232 Trendnet TU-S4 USB Type-B Female Black

**URL:** https://aio.lv/en/product--trendnet-tu-s4--10493918
**Data updated:** 2025-12-30 08:44 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** TRENDNET
**Manufacturer code:** TU-S4
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Trendnet TU-S4 is an RS-232 interface card adapter featuring a USB Type-B host interface and a passive cooling system. It supports Windows operating systems including Windows 10, 7, 8, and Server versions. With a maximum cable length of 1 meter, it provides reliable connectivity with a power consumption of 3W and output voltage of 5V.

## Long description

The TRENDnet TU-S4 is a 4-port USB-to-serial RS232 hub that enables connection of up to four RS232 devices, such as modems, printers or other serial peripherals, to a single USB port on a desktop PC or laptop. The unit includes an integrated 1 m USB cable and uses a USB Type-B host interface. It is compatible with Windows and Mac operating systems and has a compact passive-cooled design with 5 V output and typical power consumption around 3 W.
Advantages
The TU-S4 provides four independent RS232 serial ports in a single compact hub, simplifying the addition of legacy serial devices to modern computers. Integrated cabling and plug-and-play setup ensure straightforward installation, while broad OS compatibility (Windows and Mac) supports a variety of applications and drivers. The passive cooling design requires no fans and helps maintain quiet, reliable operation.
Suitable for
Connecting serial printers and modems to modern computers
Integrating laboratory equipment or industrial controllers with RS232 interfaces
Adding multiple serial ports to laptops or desktops for software development and testing
Point-of-sale systems that require legacy serial peripherals
Key specifications
Model: TRENDnet TU-S4
Interface: USB to RS232 (4 ports)
USB connector: USB Type-B host; integrated 1 m (3 ft) USB cable
Supported OS: Windows (including Windows 10, 8, 7, Server) and Mac
Power: 5 V output, typical consumption 3 W
Cooling: passive
How to use
Connect the TU-S4's integrated USB cable to an available USB port on your computer. Attach your RS232 devices to the hub's serial connectors using standard RS232 cables. Install any required drivers or software for your operating system if prompted; many systems will recognize the hub automatically. Once connected and drivers are installed, configure your serial communication settings (baud rate, parity, data bits, stop bits) within your application or device manager.
Usage recommendations
For reliable operation, use standard RS232 cables of appropriate length and avoid running serial cables parallel to high-voltage power lines. Ensure correct COM port settings in your software and keep the hub in a well-ventilated area to maintain passive cooling effectiveness.

## Specifications

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 0 - 85 |
| Operating temperature (T-T) | 0 - 70 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Serial interface type | RS-232 |
| Serial ports quantity | 4 |
| USB 2.0 ports quantity | 1 |
| DC-in jack | Yes |
| Host interface | USB Type-B |
| Output interface | RS-232 |
| Host interface gender | Female |

### Other features

| Feature | Value |
|---|---|
| Drivers included | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.413 kg |
| Height | 23 mm |
| Width | 238 mm |
| Depth | 63 mm |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 3 W |
| Power supply input voltage | 110 - 240 |
| Power supply input frequency | 50/60 |
| Output voltage | 5 |
| USB powered | No |
| External power adapter | Yes |
| Output current | 1 A |

### System requirements

| Feature | Value |
|---|---|
| Windows operating systems supported | Windows 10, Windows 7, Windows 8, Windows 8.1 |
| Mac operating systems supported | Y |
| Server operating systems supported | Windows Server 2012, Windows Server 2008, Windows Server 2003 |

### Design

| Feature | Value |
|---|---|
| Internal | No |
| Product colour | Black |
| Cooling type | Passive |
| Maximum cable length | 1 m |

### Performance

| Feature | Value |
|---|---|
| Certification | CE, FCC |
| LED indicators | Y |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Features

| Feature | Value |
|---|---|
| Connector 1 form factor | Straight |
| Connector 2 form factor | Straight |
| Data transfer rate (max) | 0.0005 Gbit/s |
| Connector 1 gender | Female |
| Connector 2 gender | Female |

### Packaging data

| Feature | Value |
|---|---|
| Cables included | USB Type-A to USB Type-B |
| Quick installation guide | Yes |

## FAQ

### 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 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

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

When making a choice, we recommend paying attention to the key features: host interface, weight, internal, output interface, 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 Interface Card Adapter Trendnet TU-S4?

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/10493918/64393547_large.webp