Slow Internet speed using Killer Ethernet adapters

Summary: The Killer Control Center software allows you to set a speed limit to your wired connection. Configuring a low value results in slower speeds when connected through a wired connection.

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Symptoms

Affected Platforms:

  • Latitude
  • OptiPlex
  • Precision Workstation
  • Inspiron
  • Vostro
  • XPS
  • G-Series
  • Alienware

Maximize the speed of the wired connection on your Dell or Alienware computers equipped with the Killer E2400 or E2500 Ethernet card.

Computers equipped with a Killer Ethernet adapter may not reach maximum bandwidth over a wired connection.

Cause

Not Applicable

Resolution

There is a speed limit option in the Killer Control Center software that you can adjust to solve this issue.

Here are the steps to change the speed limits:

  • Open the Killer Control Center
  • Click Settings on the left menu
  • Click Set Bandwidth Limits (Figure 1)
  • Set the upload and download speeds according to your connection then click Apply Settings (Figure 2)
 
SLN317316_en_US__1I_killer_nic_01_mr_v1a
Figure 1: (English Only) Killer Control Center Settings
 
SLN317316_en_US__2I_killer_nic_02_mr_v1a
Figure 2: (English Only) Killer Control Center Settings

If the problem persists, reference the articles below for additional troubleshooting steps:

Affected Products

Inspiron, OptiPlex, Vostro, XPS, G Series, G Series, Alienware, Inspiron, Latitude, Vostro, XPS, Fixed Workstations, Mobile Workstations
Article Properties
Article Number: 000135709
Article Type: Solution
Last Modified: 15 Apr 2025
Version:  7
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