Cat5e vs. Cat6 vs. Cat6a: Which Network Cabling Does Your Business Need?

When your network slows down, most businesses look at the internet plan, the router, or the computers first. But the cabling inside your walls sets a hard limit on how fast and reliable everything else can be.

If you’re building out a new office, adding workstations, or wondering whether your old wiring is holding you back, here’s what you need to know about the most common types of network cable.

Why Network Cabling Still Matters

Wi-Fi gets most of the attention, but wired connections still carry most of the load in a typical office:

• Wireless access points connect back to the network over cable.
• Phones and security cameras often draw power and data through a single cable using Power over Ethernet (PoE).
• Servers, printers, and workstations that need consistent speed perform best when wired.

Your internet connection might be fast, but if your cabling can’t keep up, you won’t get the speeds you’re paying for.

Cat5e: Still Around, But Showing Its Age

Cat5e was the standard for years, and many older buildings still have it.

• Speed: Up to 1 Gbps
• Max distance: 100 meters (328 feet)
• Best for: Basic office use in existing buildings

Cat5e still works for everyday tasks like email and web browsing. However, it isn’t a good choice for new installations. If you’re running new cable, it makes sense to install something that will last longer.

Cat6: The Practical Standard for Most Offices

Cat6 is the most common choice for business network cabling today.

• Speed: 1 Gbps up to 100 meters, and 10 Gbps over shorter runs (roughly 55 meters or less)
• Frequency: Up to 250 MHz
• Best for: Most small and mid-sized offices

Cat6 has tighter twists and better insulation than Cat5e, which reduces interference between wires. For a typical office with workstations, VoIP phones, and printers, Cat6 offers a strong balance of performance and cost.

Cat6a: Built for Growth

Cat6a (“augmented” Cat6) is the choice for businesses planning for the long term.

• Speed: 10 Gbps at the full 100 meters
• Frequency: Up to 500 MHz
• Best for: New construction, Wi-Fi access points, growing businesses, and larger facilities

Cat6a is thicker and costs more than Cat6, and it takes more space in cable pathways. In return, it delivers 10 Gbps speeds over longer runs and handles heat better when carrying higher-power PoE. That matters for newer Wi-Fi access points, PTZ security cameras, and other powered devices.

What About Fiber?

Fiber optic cable isn’t usually run to individual desks, but it plays an important role in many business networks:

• Connecting network closets on different floors
• Linking separate buildings on a campus
• Covering distances longer than copper’s 100-meter limit
• Avoiding electrical interference in industrial environments

Many businesses use a mix: fiber for the backbone and Cat6 or Cat6a out to devices.

Quick Comparison

So Which Should You Choose?

Choose Cat6 if:

• You’re adding drops to an existing office.
• Your runs are relatively short.
• You want dependable performance at a reasonable cost.

Choose Cat6a if:

• You’re building out a new space or doing a major remodel.
• You’re installing modern Wi-Fi access points or high-power PoE devices.
• You plan to stay in the space for many years.

Cable is the hardest part of your network to replace once the walls are closed. For that reason, many businesses choose to install a step above what they need today.

Don’t Forget Installation Quality

Even the best cable underperforms if it’s installed poorly. Common problems include:

• Tight bends and kinks
• Cables run alongside electrical lines
• Poor terminations
• No labeling

Choosing a qualified installer matters as much as choosing the cable. A properly designed structured cabling system keeps every run organized, labeled, and easy to expand.

Need Help Choosing?

CompuType IT Solutions has helped businesses across Belleville and the Metro East since 1988. We can evaluate your current wiring and recommend the right cable for your space and budget. Learn more about our network cabling installation services, or call (618) 233-8500 to schedule a site evaluation.

Planning a move? See our office cabling checklist