# Connection problems laptop to laser (ruida 6554) lightburn **URL:** \ **Category:** LightBurn Software Questions\ **Tags:** ruida\ **Created:** [November 4, 2025, 7:42am UTC](https://forum.lightburnsoftware.com/t/connection-problems-laptop-to-laser-ruida-6554-lightburn/184579 "2025-11-04T07:42:17Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![dspenc](https://forum.lightburnsoftware.com/letter_avatar_proxy/v4/letter/d/b5e925/32.png) [@dspenc](https://forum.lightburnsoftware.com/u/dspenc)\ **Post date:** [November 4, 2025, 7:42am UTC](https://forum.lightburnsoftware.com/t/connection-problems-laptop-to-laser-ruida-6554-lightburn/184579/1 "2025-11-04T07:42:17Z")
I woke up this morning, turned on my laser and laptop, opened LightBurn, and it won’t connect I have been using the same Ethernet connection for 2 years without issues Troubleshooting: checked all port connections and cables used a different laptop Checked my IP address was the same on Ruida and the laptop. Then I tried using the serial/USB method on LightBurn (version 2.0.05), and nothing Opened RDworks, ethernet not connecting, but serial/USB is working. does anyone have any clues as to why this is happening? I dont understand why It connects with serial/USB on RDworks, but not on LightBurn Any help would be greatly appreciated Regards Dave ---
**Author:** ![ednisley](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/ednisley/32/40455_2.png) [@ednisley](https://forum.lightburnsoftware.com/u/ednisley)\ **Post date:** [November 4, 2025, 2:06pm UTC](https://forum.lightburnsoftware.com/t/connection-problems-laptop-to-laser-ruida-6554-lightburn/184579/2 "2025-11-04T14:06:54Z")
> [@dspenc](#): > > - using the same Ethernet connection for 2 years > - Checked my IP address was the same on Ruida and the laptop Are you referring to the laptop’s own IP address or the laser’s IP address set in LightBurn? The laser IP address and the laptop IP address must be different, with LightBurn set to the laser’s IP address. [The doc](https://docs.lightburnsoftware.com/2.0/Guides/RuidaEthernet/#networking) covers some details. If that’s how it’s set up, then we need more network information for the hive mind: - Photo of the machine display showing the laser’s IP address - [Screenshot](https://www.take-a-screenshot.org/) of the [LightBurn `Device Settings`](https://docs.lightburnsoftware.com/2.0/Reference/DeviceSettings/BasicSettings/) showing the laser’s IP address - [Screenshot](https://www.take-a-screenshot.org/) of the [Windows `ipconfig`](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ipconfig) results - Does the machine [controller’s display show the network is connected](https://forum.lightburnsoftware.com/t/laser-cutter-is-making-varied-diagnonal-corrections-to-cut-trajectory-to-finish-at-the-correct-start-position-of-cut-the-trajectory-changes-sem-to-happen-in-a-couple-of-stages-and-primarily-in-the-second-half-of-the-cut-operation/184090/6)? - [Screenshot](https://www.take-a-screenshot.org/) of the [Windows `ping`](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ping) of the laser’s IP address from the PC - With the laser turned **off** , [screenshot](https://www.take-a-screenshot.org/) of the [Windows `ping`](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ping) when you [ping](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ping) the laser’s IP address Type those commands in a [`Command Prompt` window](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/windows-commands) that you start by [hitting the `Win` key and the `R` key](https://support.microsoft.com/en-us/windows/keyboard-shortcuts-in-windows-dcc61a57-8ff0-cffe-9796-cb9706c75eec#windowskey), then typing `cmd` into the `run` dialog box. ---
**Author:** ![soniclab](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/soniclab/32/67657_2.png) [@soniclab](https://forum.lightburnsoftware.com/u/soniclab)\ **Post date:** [November 4, 2025, 7:08pm UTC](https://forum.lightburnsoftware.com/t/connection-problems-laptop-to-laser-ruida-6554-lightburn/184579/3 "2025-11-04T19:08:19Z")
> [@dspenc](#): > > I dont understand why It connects with serial/USB on RDworks, but not on LightBurn You may need to install the FTDI driver in order to use serial in LightBurn. Re-run the LightBurn installer and select the serial driver on the last step of the installation. ![image](https://forum.lightburnsoftware.com/uploads/default/original/3X/f/a/fad022887541013c428c181be5ae67a014fd9bed.png) I would also try a new Ethernet cable if both LightBurn and RDWorks are not working via LAN ---
**Author:** ![system](https://forum.lightburnsoftware.com/user_avatar/forum.lightburnsoftware.com/system/32/64335_2.png) [@system](https://forum.lightburnsoftware.com/u/system)\ **Post date:** [December 4, 2025, 7:08pm UTC](https://forum.lightburnsoftware.com/t/connection-problems-laptop-to-laser-ruida-6554-lightburn/184579/4 "2025-12-04T19:08:40Z")
Closed on December 4, 2025, 7:08pm UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.