DB9 serial cable

A DB9 serial cable is a standard hardware component used to establish communication between computers and peripheral devices via the RS-232 protocol. These cables feature a 9-pin D-subminiature connector, which is essential for transmitting serial data in various industrial, commercial, and laboratory environments. They are commonly selected for connecting legacy hardware, networking equipment, and specialized diagnostic tools that require a stable, point-to-point connection. Users choose these cables when reliable, low-latency data transfer is necessary for hardware configuration or system monitoring. The design ensures a secure physical connection, preventing accidental disconnections during critical data transmission tasks. Our selection includes various lengths and configurations to meet specific technical requirements for your hardware setup.

Use cases of DB9 serial cables

DB9 serial cables are utilized in a wide range of professional and technical applications:

• Connecting computers to network switches, routers, and firewalls for console management.
• Interfacing with industrial automation equipment, such as PLCs and CNC machines.
• Connecting barcode scanners, receipt printers, and point-of-sale terminals.
• Data logging and communication with scientific instruments and laboratory sensors.
• Configuring legacy hardware that lacks modern USB or Ethernet connectivity.

Types of DB9 serial cables

There are several variations of DB9 cables designed for different wiring and gender requirements:

• Straight-through cables: Used for connecting a DTE device to a DCE device.
• Null-modem cables: Used for connecting two DTE devices directly without a modem.
• Gender changers and adapters: Used to convert male-to-male or female-to-female connections.
• Shielded cables: Designed to minimize electromagnetic interference in industrial environments.

Key features to consider

When selecting a cable, consider the following technical specifications:

• Connector gender: Ensure you match the male or female ports on your devices.
• Cable length: Choose a length that minimizes signal degradation while reaching your equipment.
• Shielding: High-quality shielding is essential for preventing data errors in environments with high electrical noise.
• Wiring configuration: Verify if your application requires a standard straight-through or a null-modem pinout.

How to choose a DB9 serial cable

To select the correct cable, first identify the port types on both the host computer and the peripheral device. Check the device manual to determine if a null-modem or straight-through connection is required, as using the wrong type will prevent communication. Consider the physical distance between devices and select a cable length that avoids excessive slack. Finally, prioritize cables with robust connector housings and adequate shielding to ensure long-term durability and signal integrity in your specific operating environment.

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:

• Extension Cable D-Sub9/M - D-Sub9/F Digitus 3m Beige for 5.99€
• DB9 RS232 Serial Cable M/F StarTech.com MXT1002MBK for 7.99€
• Serial cable StarTech 1 m DB9 RS232 Male to Female, straight-through, black for 10.49€
• USB Cable Hama 00200624 1.5m USB A Black for 10.99€
• Digitus Datatransfer extension cable D-Sub25/M - D-Sub25/F for 12.49€

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.

Are serial & parallel cables purchasable with leasing?

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.

Can serial & parallel cables be purchased for a company (with VAT)?

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.