RS232 serial cable

An RS232 serial cable is a standard hardware component used for asynchronous serial data communication between computers and peripheral devices. These cables facilitate the transmission of data by sending bits sequentially over a communication channel, making them essential for legacy hardware and industrial automation systems. Users typically select these cables to connect modems, printers, barcode scanners, and programmable logic controllers to a host computer. They are designed to maintain signal integrity over specific distances, ensuring reliable communication in environments where high-speed networking is not required. By utilizing the RS232 interface, these cables provide a stable and well-documented method for device configuration and data exchange. They remain a fundamental tool for technicians and engineers working with specialized hardware that relies on serial protocols.

Use cases of RS232 serial cables

• Connecting industrial machinery and PLCs to control systems.
• Configuring network hardware such as routers, switches, and firewalls via console ports.
• Interfacing legacy laboratory equipment and medical devices with modern computers.
• Connecting point-of-sale systems, including receipt printers and barcode readers.
• Establishing communication with microcontrollers and embedded development boards.

Types of RS232 serial cables

• Straight-through cables: Used for connecting DTE (Data Terminal Equipment) to DCE (Data Communication Equipment).
• Null modem cables: Used for connecting two DTE devices directly, such as two computers.
• DB9 to DB25 adapters and cables: Designed to bridge devices with different connector sizes.
• USB to RS232 converters: Allow modern computers without native serial ports to communicate with serial devices.

Key features to consider

• Connector type: Verify if your device requires DB9 or DB25 connectors.
• Gender: Ensure the cable has the correct male or female ends for your specific hardware.
• Shielding: High-quality shielding is necessary to prevent electromagnetic interference in industrial environments.
• Cable length: Choose the appropriate length to maintain signal quality, as RS232 has specific distance limitations.
• Wiring configuration: Confirm whether a straight-through or null modem pinout is required for your application.

How to choose an RS232 serial cable

To select the correct RS232 serial cable, first identify the port types on both the host device and the peripheral. Check the technical documentation of your equipment to determine if it requires a straight-through or a crossover (null modem) connection. Consider the physical environment where the cable will be installed; shielded cables are recommended for areas with high electrical noise. Finally, ensure the cable length is sufficient for your setup without exceeding the standard distance limits of the RS232 protocol to avoid data loss.

Which serial & parallel cables are the most popular and affordable in 2026?

The full list of popular models at affordable prices is available on this page. In 2026, the following models show high demand and an excellent price-to-quality ratio:

• DB9 RS232 Serial Cable M/F StarTech.com MXT1002MBK for 7.99€
• Delock Serial Cable RS-232 D-Sub 9 Pin Male to JST XH 4 Pin Female 25 cm for 8.49€
• Delock Serial Cable RS-232 D-Sub 9 Female to JST XH 4 Pin Female 25 cm for 8.49€
• DeLOCK Serial Cable RS-232 D-Sub9 male to female 2 m Black for 10.49€
• Serial cable StarTech 1 m DB9 RS232 Male to Female, straight-through, black for 10.49€

Why is it worth buying serial & parallel cables at AiO.lv?

At the AiO.lv online store, you can place an order at a great price with delivery across Latvia — to Riga, Daugavpils, Liepaja, Jurmala, Ventspils, and other cities, as well as throughout Europe. We offer products from leading manufacturers: ADAPTEC, APC, Cisco, Epson, HAMA, HP, Panasonic, Siemens, TRENDNET, WENTRONIC, Asus, DIGITUS, LOGILINK, Navilock, GEMBIRD, Unitek, ATEN, GOOBAY, DELTACO, QNAP. When you shop with us, you get:

• official warranty and guaranteed quality;
• convenient payment options (including installment and credit);
• fast and reliable delivery across Latvia and to any EU country.

FAQ

Where can you find a serial & parallel cables with cheap prices?

You can buy cheaper at the AiO.lv online store. We offer competitive prices and regular discounts, so you always have the chance to find a great deal.

What is the delivery time for serial & parallel cables?

If you place your order today, delivery will take between 1 and 5 business days depending on the chosen method.

How long is the warranty period for serial & parallel cables?

Our store provides an official manufacturer’s warranty ranging from 12 to 36 months, depending on the model and brand. If needed, you can always contact our customer service department or the manufacturer’s authorized service center for support.

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Yes, if the selected product costs more than €50. You can learn more about installment purchase options and the terms of application on the Payment page.

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Yes. AiO.lv works with legal entities in Latvia and throughout Europe. All product prices are shown with VAT included. In certain cases, a 0% VAT rate may apply — for example, when purchasing from other EU countries with a valid VAT number. We issue an invoice immediately after the order is placed, support BIS electronic invoices, and automatically generate all required accounting documents. To complete a purchase for a company, simply select the company profile during checkout.