# Zymkey and Pi no longer bound

**URL:** https://community.zymbit.com/t/zymkey-and-pi-no-longer-bound/296
**Category:** ZYMKEY4
**Created:** [May 26, 2018, 9:42pm UTC](https://community.zymbit.com/t/zymkey-and-pi-no-longer-bound/296 "2018-05-26T21:42:48Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![roger.f](https://avatars.discourse-cdn.com/v4/letter/r/91b2a8/32.png) [@roger.f](https://community.zymbit.com/u/roger.f)
#### Post date: [May 26, 2018, 9:42pm UTC](https://community.zymbit.com/t/zymkey-and-pi-no-longer-bound/296/1 "2018-05-26T21:42:48Z")

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I have a Zymkey 4i connected to a Raspberry Pi model 3B that has been working fine. I removed the zymkey to troubleshoot issues with my laptop/MobaXterm connection.After i reinstalled the Zymkey no longer syncs up with the Pi - it just shows the same steady fast flash. Nothing has changed with the hardware or software. I can’t find documentation on this topic.

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### Author: ![Phil\_S\_Zymbit\_1](https://avatars.discourse-cdn.com/v4/letter/p/45deac/32.png) [@Phil\_S\_Zymbit\_1](https://community.zymbit.com/u/Phil_S_Zymbit_1)
#### Post date: [June 19, 2018, 4:15pm UTC](https://community.zymbit.com/t/zymkey-and-pi-no-longer-bound/296/2 "2018-06-19T16:15:15Z")

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roger.f

Did you resolve your issue ?

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### Author: ![roger.f](https://avatars.discourse-cdn.com/v4/letter/r/91b2a8/32.png) [@roger.f](https://community.zymbit.com/u/roger.f)
#### Post date: [June 19, 2018, 5:38pm UTC](https://community.zymbit.com/t/zymkey-and-pi-no-longer-bound/296/3 "2018-06-19T17:38:45Z")

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Yes. Thank you!

It turns out that the power supply was marginal. Replacing the power supply solved the problem.

- Roger