How do i increase my Aggregated link speed

Graham Farnsworth 0 Reputation points
2026-08-25T20:04:48.3266667+00:00

Currently my Aggregated Link speed is capped at 100mbps, Ive tried increasing my Speed & Duplex but that didnt do anything, what do i do?

Windows for home | Other | Internet and connectivity
0 comments

2 answers

Sort by: Newest
Most helpful Newest Oldest
  1. Manoel Barros 21,815 Reputation points Independent Advisor
    2026-08-25T23:45:00.68+00:00

    Hi!

    Internet speed doesn't depend solely on this option. First, please send me the manufacturer and model of your computer or laptop so I can check if it supports speeds higher than 1 Gbps:

    • Press WINDOWS + R > Type "msinfo32" > In System Summary, send me a screenshot.

    Please also answer the following questions:

    1. Are you connected via an Ethernet cable or Wi-Fi?
    2. What is the speed of your internet plan?
    3. If you are using an Ethernet cable, what type is it (Cat5, Cat5e, Cat6)? You can find this information printed on the cable itself.
    4. If you are using Wi-Fi, check with your internet service provider to see which Wi-Fi version is being used and whether it supports speeds higher than 100 Mbps.

    Was this answer helpful?

    0 comments

  2. AI answer

    2026-08-25T20:06:09.2066667+00:00

    A 100 Mbps aggregated or Ethernet link usually points to link negotiation falling back because of the physical connection, not a Windows Speed & Duplex setting.

    Try this in order:

    1. Check the cable first.
      • Unplug and replug the network cable at both ends.
      • Replace it with a different, known-good cable.
      • If possible, use a higher quality cable.
    2. Check the port path.
      • If the PC is connected through a wall socket, switch, or other intermediate device, test with a direct connection to the router or switch.
      • A faulty wall jack, switch port, router port, or NIC port can cause the link to stay at 100 Mbps.
    3. Test with another device.
      • Connect the same cable to another computer that supports Gigabit Ethernet.
      • If the second device also links at 100 Mbps, the issue is likely the cable, wall socket, or network equipment.
      • If the second device links at 1 Gbps, the issue is likely the original PC or its adapter.
    4. Set the adapter back to Auto-Negotiation.
      • In the network adapter advanced properties, set Duplex Speed or Speed & Duplex to Auto-Negotiation.
      • A fixed manual setting can mismatch the switch and prevent proper negotiation.
    5. Disable adapter power-saving features.
      • In the adapter advanced settings, disable options such as Green Ethernet if present.
      • In environments where performance matters, power management that turns off or throttles the adapter should be avoided.
    6. Verify switch and adapter settings match.
      • Fixed speed, duplex, and flow control settings should correspond to the switch settings.
      • Mismatched settings can cause periodic auto-synchronization issues or reduced link speed.

    If the link still stays at 100 Mbps after those checks, the most likely causes are:

    • faulty or low-quality cable
    • bad connector or wall socket
    • bad router/switch port
    • bad Ethernet port on the PC
    AI-generated content may be incorrect. Read our transparency notes for more information.

    Was this answer helpful?

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.