# Laser Controller will not connect to PC **URL:** \ **Category:** Pre-sales & After-sales\ **Created:** [June 25, 2023, 1:43am UTC](https://forum.cloudray.com/t/laser-controller-will-not-connect-to-pc/1229 "2023-06-25T01:43:21Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Bill](https://avatars.discourse-cdn.com/v4/letter/b/ac91a4/32.png) [@Bill](https://forum.cloudray.com/u/Bill)\ **Post date:** [June 25, 2023, 1:43am UTC](https://forum.cloudray.com/t/laser-controller-will-not-connect-to-pc/1229/1 "2023-06-25T01:43:21Z")
Order/Invoice ID: #20691 Issue Product Name: [MP-60 LiteMarker 60W Split Laser Engraver Fiber Marking Machine](https://www.cloudraylaser.com/products/mp-60-litemarker-60w-split-laser-engraver-fiber-marking-machine-with-11-8-x-11-8-working-area) Issue Description: USB from Laser gets - "Unknown USB Device - Device Descriptor Request Failed Issue Scenario(Appears on first use OR Appears after a period of use):Has never connected the first time ---
**Author:** ![davidnovak](https://avatars.discourse-cdn.com/v4/letter/d/ed8c4c/32.png) [@davidnovak](https://forum.cloudray.com/u/davidnovak)\ **Post date:** [October 6, 2025, 8:31pm UTC](https://forum.cloudray.com/t/laser-controller-will-not-connect-to-pc/1229/2 "2025-10-06T20:31:46Z")
Any resolution on this issue? I’m facing the same problem and pulling my hair out. Changed computers, changed USB cables. I’m starting to think it’s the board in the laser controller. ---
**Author:** ![Bill](https://avatars.discourse-cdn.com/v4/letter/b/ac91a4/32.png) [@Bill](https://forum.cloudray.com/u/Bill)\ **Post date:** [October 6, 2025, 9:43pm UTC](https://forum.cloudray.com/t/laser-controller-will-not-connect-to-pc/1229/3 "2025-10-06T21:43:27Z")
Had to change the USB comms card in the laser controller- attaches to the main board Was in warrenty at the time