A Quick Guide to Essential Cable Connectors for a Point of Sale (POS) System

Are you struggling with cable confusion? Identifying the correct connector for your Point of Sale (POS) system is fundamental for a seamless operation.

This guide breaks down the most common cable connectors you’ll encounter so you can troubleshoot and maintain your setup with confidence.

1.    VGA


The VGA (Video Graphics Array) connector is reliable for transmitting video signals between devices like monitors and projectors.  Commonly referred to as 15DB, the VGA connector comes in either a male or female version, depending on the application and device.

While newer options like HDMI and DisplayPort are gaining popularity, VGA remains a dependable choice in many setups, particularly for secondary displays in POS systems.

2.    USB


The Universal Serial Bus (USB) is one of the most versatile and widely used connector types. It supports data transfer, charging, and device connectivity. Numerous variations exist, including USB Type A, Type B, USB Type C, and others found here USB. The picture above shows standard type A and C USB connectors.

3.    Serial 

Serial connectors continue to thrive in industries requiring dependable communication for specialized devices.

Serial connections support industrial-grade peripherals, scientific instruments, and select POS components. They offer simple, reliable communication and ensure compatibility with specific legacy equipment.

Serial connections come in various pin counts. The image above displays the standard DB9/female and DB25/male serial connectors.  

4.    Ethernet 

Ethernet connectors are indispensable for maintaining a high-speed, stable internet connection in POS setups. Whether powering cloud-based transaction systems, connecting multiple devices in a network, or ensuring uninterrupted service during peak hours, Ethernet cables offer unmatched reliability and performance.

As with all technologies, ethernet cables have evolved. Category 5 or CAT5e and CAT6 are some of the more popular ones found today. For more information, see Category Ethernet Cable.

Why Knowing Your Connectors Matters

There are numerous cables and connector combinations. There are too many to cover here. However, familiarizing yourself with these essential connectors helps troubleshoot and ensures your POS system operates efficiently.

A well-connected POS system means smoother transactions, happier customers, and more efficient business.