# Fathom-X not recognised by computer

**URL:** <https://discuss.bluerobotics.com/t/fathom-x-not-recognised-by-computer/8472>\
**Category:** Blue Robotics Products\
**Created:** [October 29, 2020, 6:40pm UTC](https://discuss.bluerobotics.com/t/fathom-x-not-recognised-by-computer/8472 "2020-10-29T18:40:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![phinchey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@phinchey](https://discuss.bluerobotics.com/u/phinchey)\
**Post date:** [October 29, 2020, 6:40pm UTC](https://discuss.bluerobotics.com/t/fathom-x-not-recognised-by-computer/8472/1 "2020-10-29T18:40:34Z")

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I ordered a Fathom-X tether interface board set. One works perfectly - my laptop recognises that a device has been plugged in and creates an IP address., The other On the other, LEDs on the RJ45 connector don’t light up and and nothing is recognised by the laptop.

The LX200V20 seems to work fine, as when I swap them between modules, the one that worked before still works, and the dud is still a dud. I’ve swapped power supplies too, using 12v and USB.

This leads me to believe there is something wrong with the carrier board.  
I have a working knowledge of elecronics and a multimeter, but I’m not sure where to start with troubleshooting the PCB…

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**Author:** ![patrickelectric](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/patrickelectric/32/2162_2.png) [@patrickelectric](https://discuss.bluerobotics.com/u/patrickelectric)\
**Post date:** [November 5, 2020, 1:50pm UTC](https://discuss.bluerobotics.com/t/fathom-x-not-recognised-by-computer/8472/2 "2020-11-05T13:50:53Z")

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Please send an email to [support@bluerobotics.com](mailto:support@bluerobotics.com), if necessary a replacement will be sent.

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**Author:** ![phinchey](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@phinchey](https://discuss.bluerobotics.com/u/phinchey)\
**Post date:** [November 12, 2020, 3:36pm UTC](https://discuss.bluerobotics.com/t/fathom-x-not-recognised-by-computer/8472/3 "2020-11-12T15:36:11Z")

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I sent an email to support and Daniel sent out a replacement immediately. It works perfectly on my 200m tether, delivering 1080p video and control/telemetry. Thank you for your excellent customer support guys!