# InLine 33307A Serial Converter Repeater Isolator USB 2.0 to RS-232 Black

**URL:** https://aio.lv/en/product--inline-33307a--12649366
**Data updated:** 2026-09-23 04:25 (EEST)
**Category:** Serial & Parallel Cables
**Manufacturer:** InLine
**Manufacturer code:** 33307A
**EAN:** 4043718353125
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.99 €
**Prices and availability valid until:** 2026-11-02 23:59
**Price without VAT (21%):** 25.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--inline-33307a--12649366

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.11.2026 | free |
| Pickup points | 05.11.2026 | 1.99 EUR |
| Courier delivery to door | 05.11.2026 | 4.99 EUR |

## Summary description

InLine 33307A serial converter, repeater, and isolator featuring USB 2.0 and RS-232 interfaces in a black enclosure. Designed for reliable data transmission and device communication in industrial or office environments. Compatible with Windows and Mac operating systems.

## Long description

The InLine 33307A Serial Converter Repeater Isolator USB 2.0 to RS-232 Black is a specialized hardware solution designed to bridge the gap between modern computer systems and legacy serial equipment. This device functions as a converter, repeater, and isolator, ensuring stable and protected communication between host systems and serial peripherals. Built with high-quality components, it provides a dependable virtual COM port connection suitable for industrial, commercial, and professional technical environments where reliable data exchange is critical.
Advantages
The unit features advanced integrated protection circuits on both the USB and RS-232 interfaces, including a PTC fuse, ESD protection, and TVS diodes, which safeguard connected hardware against electrical surges and electrostatic discharge. Its reliable FTDI chipset guarantees stable performance and broad driver compatibility across multiple operating systems. The inclusion of a 4-pin screw terminal block allows for flexible and secure wiring, accommodating ground connections and cable shielding to minimize signal interference in demanding operational settings. Additionally, clear status indicators for power, transmission, and reception provide real-time visual feedback for easier troubleshooting and system monitoring.
Suitable for
Connecting legacy RS-232 serial devices to modern computers via USB 2.0
Industrial automation, machinery configuration, and equipment diagnostics
IT maintenance, laboratory setups, and serial data transmission
Point-to-point communication setups requiring extended signal reliability
When it may not be suitable
This device is not designed for multi-drop network topologies, as it supports strictly point-to-point communication modes. It may also be unnecessary for users working exclusively with modern peripheral interfaces that do not rely on legacy serial communication standards.
Key specifications
Host interface: USB 2.0 via USB Type-A connector
Output interface: RS-232 via 4-pin terminal block
Pin configuration: GND, TX, RX, GND
Supported baud rates: 300 to 921,600 bps
Chipset: FTDI FT232RNL
Physical dimensions: 22 mm width, 78 mm depth, 11 mm height
Color: Black
Supported operating systems: Windows 7, 8, 8.1, 10, 11, Linux, macOS, Android
Operating temperature range: -15 °C to +70 °C
How to use
To begin using the device, connect the USB-A end of the converter to an available USB port on your computer. Connect your serial device wires to the designated pins on the 4-pin screw terminal block, ensuring proper alignment of transmit, receive, and ground lines. Install the appropriate drivers for the integrated chipset if required by your operating system, which will create a virtual COM port. Once configured, you can initiate communication through your standard serial terminal or control software using the established virtual port parameters.
What to consider before purchase
Verify that your peripheral equipment utilizes an RS-232 serial interface compatible with a terminal block connection.
Check your operating system version to ensure proper driver support for the internal chipset.
Assess your physical wiring requirements to ensure the distance limitations for USB and RS-232 connections are respected.
Usage recommendations
For optimal performance and longevity, ensure that all cable shields and ground connections are properly secured to the designated terminal pins, especially in environments with high electromagnetic interference. Avoid exceeding the recommended cable length limits for both USB and RS-232 runs to maintain signal integrity.

## Specifications

| Feature | Value |
|---|---|
| Dimensions (WxDxH) | 22 x 78 x 11 |
| Weight | 0.014 kg |
| Operating relative humidity (H-H) | 5 - 95 |
| Chipset | FTDI FT232RNL |
| Package weight | 33 g |
| Mac compatibility | Yes |
| Operating temperature (T-T) | -15 - 70 |
| Height | 11 mm |
| Width | 22 mm |
| Depth | 78 mm |
| Product colour | Black |
| Host interface | USB 2.0 |
| Country of origin | China |
| Package depth | 165 mm |
| Package height | 22 mm |
| Package width | 100 mm |
| Package type | Polybag |
| Connector 1 | USB Type-A |
| Connector 2 | Terminal block |
| Output interface | RS-232 |
| RS-232 signals | Rx, Tx, GND |
| Baud rate | 921.6 Kbit/s |
| Windows operating systems supported | Windows 7, Windows 10, Windows 11, Windows 8.1, Windows 8 |
| Mac operating systems supported | MacOS |
| Package volume | 400 cm³ |
| Connector gender | Male/Female |

## FAQ

### How much does the InLine 33307A USB to RS-232 Serial Converter cost, and is it available for purchase?

The price is 30.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 43 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 02.11.2026 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. 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

## Image

https://aio.lv/img/cache/product/12649366/69832479_large.webp