# Heatpump Setup USB port changes

**URL:** <https://community.openenergymonitor.org/t/heatpump-setup-usb-port-changes/26204>\
**Category:** emonHub\
**Created:** [29 May 2024 12:19 UTC](https://community.openenergymonitor.org/t/heatpump-setup-usb-port-changes/26204 "2024-05-29T12:19:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![higopi](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/h/f475e1/32.png) [@higopi](https://community.openenergymonitor.org/u/higopi)\
**Post date:** [29 May 2024 12:19 UTC](https://community.openenergymonitor.org/t/heatpump-setup-usb-port-changes/26204/1 "2024-05-29T12:19:45Z")

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Hi there ,

1. I have a sharky 775 heatmeter connected to one usb port of the pi - PL2303 IC based MBUS adaptor
2. I have an SDM120 connected to another port of the Pi - FTDI based RS485 adaptor

ttyUSB0 and 1 get changed at times when I reboot … Is there some way to stop this happening.

Thanks  
Gopi

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**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\
**Post date:** [29 May 2024 18:13 UTC](https://community.openenergymonitor.org/t/heatpump-setup-usb-port-changes/26204/2 "2024-05-29T18:13:42Z")

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Yes, instead of `/dev/ttyUSB0` use the full device ID e.g

`/dev/serial/by-id/sb-FTDI_FT232R_USB_UART_A4007TEm-if00-port0`

You can find this ID with the command `ls /dev/serial/by-id -la`

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**Author:** ![higopi](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/h/f475e1/32.png) [@higopi](https://community.openenergymonitor.org/u/higopi)\
**Post date:** [30 May 2024 07:29 UTC](https://community.openenergymonitor.org/t/heatpump-setup-usb-port-changes/26204/3 "2024-05-30T07:29:30Z")

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Thanks @glyn.hudson . Do I need to ensure the same configuration settings for the shop HP kit ?

I was helping a local installer put in a shop HP level 3 and had to do some plugging and unplugging the USB devices till I got it working . Just wondering in hindsight if this was the cause of that .

Thanks  
Gopi

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**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\
**Post date:** [30 May 2024 10:34 UTC](https://community.openenergymonitor.org/t/heatpump-setup-usb-port-changes/26204/4 "2024-05-30T10:34:50Z")

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> [@higopi](#):
>
> Do I need to ensure the same configuration settings for the shop HP kit

No, the emonHP in the L3 HP Bundle will be fully pre-provisioned. No setup config should be needed. If something doest work please give us a call or drop us an email.