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How to Check Network Adapter and Ethernet Speed in Windows

by Lauren Ballejos, IT Editorial Expert
How to Check Network Adapter and Ethernet Speed in Windows

Instant Summary

This NinjaOne blog post offers a comprehensive basic CMD commands list and deep dive into Windows commands with over 70 essential cmd commands for both beginners and advanced users. It explains practical command prompt commands for file management, directory navigation, network troubleshooting, disk operations, and automation with real examples to improve productivity. Whether you’re learning foundational cmd commands or mastering advanced Windows CLI tools, this guide helps you use the Command Prompt more effectively.

Key Points

  • Use Task Manager, Network and Sharing Center, or Command Prompt to check Ethernet speed in Windows.
  • Update network adapter drivers and upgrade Ethernet cables to improve speed and compatibility.
  • Use tools like Speedtest by Ookla and LAN Speed Test for accurate network performance measurement.
  • Monitor bandwidth usage and segment networks to reduce congestion and maintain consistent speed.

Network adapters and Ethernet speed directly affect your organization’s productivity, especially how quickly your team accesses resources, collaborates, and completes daily tasks. This guide provides actionable steps on how to check network adapters and Ethernet speed in Windows and manage network connections more efficiently.

You may also check the “How to Check Network Adapter Speed in Windows” video for a visual presentation of this guide.

Methods to check network adapter speed in Windows

Windows offers several ways to check network adapter speed on your company’s devices. Here are the most common methods.

Use Task Manager to check network adapter speed

Task Manager provides a quick way to check network adapter speed:

  1. Press “Ctrl + Shift + Esc” to open “Task Manager”.
  2. Go to the “Performance” tab.
  3. On the left side, select “Ethernet”.
  4. Look for the “Link Speed” field, which shows your current network speed.

Check adapter speed through the Network and Sharing Center

You can also check network adapter speed using the Network and Sharing Center:

  1. Right-click the “Network” icon in the system tray and select “Open Network & Internet settings”.
  2. Click on “Network” and Sharing Center”.
  3. Next to “Connections”, click on the active connection (Ethernet).
  4. In the “Status” window, you’ll find the “Speed” value, displaying the current adapter speed.

This approach provides detailed information about the network connection status and is useful for troubleshooting specific devices.

Use Command Prompt for network adapter details

If you prefer command-line tools, Command Prompt offers a way to view network adapter details:

  1. Open Command Prompt by typing cmd in the Windows search bar and selecting it.
  2. Enter the command: “netsh interface show interface”.
  3. For detailed speed information, enter: wmic nic where “NetEnabled=true” get Name, Speed
  4. Review the displayed information, which includes adapter names and their speeds.

Understanding network adapter speed and performance

Network adapter speed refers to the rate at which data moves between your company’s devices and the internet, influencing both download and upload speeds. Let’s look at what network adapter speed is and why it’s important to understand this metric.

What is network adapter speed?

Network adapter speed is measured in megabits per second (Mbps) or gigabits per second (Gbps). It defines the data transmission rate between devices and the internet. Speed depends on the adapter’s specifications and the connection type, such as Ethernet. The adapter connects employee devices to the network infrastructure.

Why network speed matters for performance

Higher network speeds enable faster access to online resources, smoother cloud application performance, and quicker file transfers. For professional use, high speed reduces delays and wait times. Slow networks can cause failures or poor performance in large file transfers, video conferencing, and cloud backups.

Common factors that affect network performance

Several factors influence your network’s performance, including:

  • Router capabilities: The router’s speed limits how much data can be transferred at any given time.
  • Network congestion: The number of connected devices against limited bandwidth.
  • Adapter quality: Older adapters may not support higher speeds.
  • Cable type: Different Ethernet cables (e.g., Cat5e, Cat6) support different max speeds.

Understanding these factors helps you identify bottlenecks and areas for improvement in your network setup.

Tools and tips to measure network performance

Are you still wondering what is my network performance? Built-in tools are helpful, but additional software can give you a more comprehensive overview of network performance across your organization.

Recommended software tools for network speed tests

Several tools are available to test your network speed with more precision. Popular options include:

  • Speedtest by Ookla: A widely trusted tool that tests both upload and download speeds along with latency.
  • NetWorx: A program that monitors internet usage and connection speed over time, helping you identify trends or peak usage hours.
  • LAN Speed Test: Ideal for measuring local network speed, which can be useful for troubleshooting issues unrelated to internet speed.

These tools help you assess whether your network infrastructure meets your organization’s needs.

Tips for accurate speed testing

To get accurate speed test results, follow these tips:

  • Close background applications: Make sure other programs aren’t consuming bandwidth during the test.
  • Test at different times of day: Network performance can vary, so testing at various times helps account for potential congestion.
  • Use wired connections: Perform tests over Ethernet to eliminate variables associated with wireless connections.

How to interpret speed test results for network performance

Understanding speed test results helps you assess whether your employees’ connections are fast enough to meet their needs:

  • Download speed: Affects how quickly devices can receive data from the internet, impacting activities like accessing cloud services or downloading files.
  • Upload speed: Impacts how quickly devices can send data to the internet, important for tasks like uploading large files or backing up data.
  • Ping (Latency): Measures the delay in data transmission; lower latency is ideal for real-time applications like VoIP or video conferencing.

If network speed becomes a recurring concern, it may signal a gap in how monitoring is structured across phases. Strengthen your visibility and response by understanding the full lifecycle of monitoring, from detection to optimization.

Troubleshooting slow network adapter speeds

If your network speed isn’t meeting expectations, there are several steps you can take to improve performance.

Common causes of slow network speeds

Several common issues could be slowing down your network:

  • Outdated drivers: Older drivers may limit adapter performance or cause compatibility issues.
  • Interference from other devices: Electronic devices and other networks can cause interference, affecting network performance.
  • ISP limitations: Internet Service Providers may impose bandwidth limits or experience congestion during peak hours.

Steps to improve network adapter performance

If you’re experiencing slow speeds, try these steps to improve your network adapter’s performance:

  • Update network adapter drivers: Go to Device Manager, find your network adapter, right-click, and select Update driver to make sure you’re using the latest drivers.
  • Adjust adapter settings: In Network and Sharing CenterChange adapter settings, right-click your adapter to explore settings under Properties.
  • Upgrade Ethernet cables: If you’re using older cables like Cat5e, consider upgrading to Cat6 or Cat7 cables, which support higher speeds.
  • Check for network congestion: Use network monitoring tools to identify bandwidth-heavy applications or unauthorized devices.

If slow speeds persist after troubleshooting, it might be time to upgrade your network adapter. Older adapters may not support the latest speeds or networking standards, limiting overall performance.

Building a reliable network environment

Beyond checking network adapter speed, you can improve performance across devices by creating a stable and efficient network environment. Here’s how:

  • Invest in quality networking equipment: Use routers, switches, and adapters that support the latest networking standards.
  • Implement network segmentation: Separate critical services and high-bandwidth applications into different network segments. For a closer look at the benefits and best practices, watch our video: Network Segmentation Best Practices.
  • Regularly monitor network usageUse network monitoring tools to keep track of bandwidth usage and identify bottlenecks.
  • Maintain network security: Make sure that firewalls, antivirus software, and intrusion detection systems are up to date.
  • Keep firmware and software updated: Regularly update the firmware on your networking equipment and verify that all devices have the latest updates.

Uncovering slow network speeds is only the first step to keeping performance optimized requires ongoing monitoring and fast remediation. Gain centralized control and real-time insights across your entire IT environment with NinjaOne’s Remote Monitoring and Management (RMM) platform.

Related topics:

FAQs

Fluctuations can occur due to auto-negotiation between the adapter and switch, interference (for Wi-Fi), or power-saving settings. Disable “Green Ethernet” or “Energy Efficient Ethernet” in adapter properties if stability is critical.

No. Both netsh and wmic require administrative privileges to execute. Run Command Prompt as an administrator for accurate results.

Yes, but Wi-Fi speeds reflect the connection rate between your device and the router, not the internet speed. Use netsh wlan show interfaces for Wi-Fi-specific details like signal strength and channel.

Update drivers, replace outdated Ethernet cables, minimize network congestion, and use monitoring tools to identify bandwidth-heavy apps or devices.

Use Cat6 or Cat7 Ethernet cables for gigabit speeds and reduced interference, especially if transferring large files or using cloud applications.

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