Serial Cables  

Serial cables for a reliable data connection

Serial cables are used to connect computers, machines and other devices to one another. These cables are still widely used with older computers, industrial equipment, point-of-sale systems, measuring equipment and technical installations. A good-quality cable ensures that data is transmitted securely and without interference.

At WBNet, you’ll find various solutions for serial connections. Browse our range and choose the connector, length and type that suit your equipment.

What is a serial cable used for?

A serial cable transmits data one bit at a time between two devices. This method of communication has been in use for a long time and remains important in various technical environments.

You can use a serial connection for, amongst other things:

• Computers and peripherals
• Industrial machinery
• Point-of-sale systems
• Measurement and control equipment
• Modems and printers
• Network and server equipment
• Technical installations

Particularly within businesses and industrial environments, there are still many devices with a serial connection. With the right cable, you can continue to use this equipment.

What is an RS232 cable?

An RS232 cable is a commonly used type of serial cable. RS232 is a standard for transmitting data between two devices. The cable is used, for example, to connect a computer to a machine, printer, modem or measuring device. Many RS232 cables have a 9-pin DB9 connector. There are also versions with a 25-pin connector. You should therefore always check which connector your devices have before ordering a cable.

Also make sure you know whether you need a male or female connector. A male connector has pins. A female connector has sockets into which these pins fit.

Different types of serial cables

Not every serial connection works with the same cable. The connectors and internal wiring can vary from device to device. It is therefore important to check in advance which type is required.

Standard serial cable

A standard serial cable is used to connect two compatible devices. Check the connector type, the number of pins and the required length.

Serial extension cable

Is the existing cable too short? If so, you can use a serial extension cable. This allows you to increase the distance between the devices without having to replace the entire setup.

Null modem cable

A null modem cable is used to connect two computers or similar devices directly to one another. The internal wiring differs from that of a standard RS232 cable. This allows the devices to exchange data directly without the need for a modem.

USB to serial adapter

Modern laptops and computers often no longer have a serial port. With a USB to serial adapter, you can still connect devices with an RS232 connection to a USB port. When using an adapter, always check that it is compatible with your operating system and equipment. In some cases, you’ll need to install a driver first.

How do you choose the right cable?

Using the wrong cable can prevent the connection from working. Therefore, before placing your order, check the connectors on both devices.

In any case, pay attention to the following points:

• The type of connector, such as DB9 or DB25
• The number of pins
• A male or female connector
• The required cable length
• A standard or null modem connection
• The connection on your computer, such as serial, USB-A or USB-C
• The requirements of the connected device

If in doubt, consult your equipment’s manual. It will usually specify the type of cable and connector you need.

Reliable connection for business applications

Serial connections are often used in places where stable communication is important. Examples include manufacturing plants, warehouses, workshops, shops and technical services.

The screws on the sides of many DB connectors help to secure the plug firmly in place. This prevents the connection from coming loose easily due to movement or vibrations. This is particularly useful for machinery and fixed installations. Furthermore, don’t automatically opt for the longest cable. A suitable length prevents unnecessary cables from tangling around the equipment and helps to keep the installation tidy.

Connecting old equipment to a new computer

Do you have a device with a serial port, but your new computer only has USB ports? You don’t always need to replace the device. A suitable adapter may enable the connection. For computers with a USB-A port, use a USB-A-to-RS232 adapter. For newer laptops, a USB-C-to-RS232 adapter may be required. Check in advance whether the adapter is supported by your operating system.

Order a serial cable or adapter from WBNet

Would you like to buy a serial cable or RS232 cable? Then take a look at WBNet’s range. Compare the connectors, lengths and models, and choose the product that suits your application.

Always check both connectors before ordering. This will prevent you from choosing a cable with the wrong connector or wiring. Are you having trouble deciding? Please get in touch for help finding the right cable.