# Adapter USB Lindy serial port converter with COM retention (MPN L43413)

**URL:** https://aio.lv/en/product--lindy-l43413--11867156
**Data updated:** 2026-03-09 17:44 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** Lindy
**Manufacturer code:** L43413
**EAN:** 4002888434133
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lindy-l43413--11867156

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

USB adapter by Lindy that converts a USB connection to a serial (COM) port and supports COM port retention. Designed to provide serial connectivity for devices lacking native RS‑232/serial ports, it enables connection of legacy equipment, industrial instruments, and POS or field devices to modern computers via USB. Suitable for software that requires a persistent COM port assignment.

## Long description

The Lindy USB serial port converter with COM retention is a compact adapter that converts a USB connection into a standard RS-232 serial (COM) interface. It is intended to provide reliable serial connectivity for computers and laptops that no longer include native RS-232 ports, enabling connection of legacy equipment, industrial instruments, POS terminals and field devices. The adapter maintains a persistent COM port assignment so software that depends on a fixed port number can continue to operate without reconfiguration each time the device is reconnected.
Advantages
This USB-to-serial adapter supports COM retention to ensure stable, repeatable port assignment across reboots and reconnections. It offers plug-and-play USB connectivity with driver support on common operating systems, low-latency serial communication suitable for most control and data-acquisition tasks, and a compact design that is easy to integrate into desktop or mobile setups. The device provides a straightforward way to connect RS-232 peripherals to modern systems while minimising setup overhead.
Suitable for
Connecting legacy serial equipment (modems, measurement devices) to modern PCs and laptops
Point-of-sale (POS) hardware and barcode scanners that require a COM port
Industrial control systems and PLC interfaces needing serial communication
Software applications that expect a persistent COM port assignment
Field devices and test instruments used with portable computers
Key specifications
Interface conversion: USB to RS-232 (serial COM)
COM port retention: preserves assigned COM number across reconnections
Connector types: USB (host) and DE-9 (female) or equivalent serial connector
Data transmission: standard RS-232 signalling levels and control lines (TX, RX, RTS, CTS, DTR, DSR, GND)
Power: bus-powered from the USB port (no external power required)
Operating environment: suitable for typical office and industrial indoor use
How to use
Install the appropriate driver for your operating system if required; many modern systems will recognise the adapter automatically. Connect the adapter to a free USB port on the host computer and attach the serial device to the adapter's serial connector. After installation the adapter appears as a COM port in the operating system; configure your application to use that COM port and set baud rate, parity, data bits and stop bits to match the connected device. When COM retention is enabled, the adapter will retain the same COM number across reconnections, minimising the need to reconfigure software.
Usage recommendations
For reliable operation, use a short shielded serial cable and ensure communication parameters match exactly between the host application and the connected device. Avoid disconnecting during active data transfer, and keep drivers up to date for compatibility with operating system updates. In industrial environments, place the adapter away from strong electrical interference sources and consider using surge protection on power and serial lines where appropriate.

## FAQ

### How much does the Lindy USB to Serial Adapter L43413 cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 06.07.2026 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 Lindy 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 Lindy 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/11867156/67272440_large.webp